MESON Chess Problem Database
Problem Display
PID: 16718 (8/3P1K2/3P4/4Q1N1/2P5/5p2/2Pk1q2/NR4B1 w - - 0 1)
Hartong, Jan
1st Prize, Nederlandse Bond van Probleemvrienden TT, 1942
#2
10 + 3
| 136 | Problem Observer | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qxg1
- 2.Sxf3#
- 1...Qe3
- 2.Qxe3#
- 1...Qg3
- 2.Qe3#
- 1...Qd4
- 2.Qe1#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qe2
- 2.Qa5#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qe1
- Tries
- 1.Ke6?
- 1...Qxg1
- 2.Sxf3#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qe2!
- 1...Qxg1
- 1.Kf6?
- 1...Qxg1
- 2.Sxf3#
- 1...Qe3
- 2.Qxe3#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qe2
- 2.Qa5#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qd4!
- 1...Qxg1
- 1.Kg6?
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qe2
- 2.Qa5#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qxg1!
- 1...Qe3
- 1.Ke7?
- 1...Qxg1
- 2.Sxf3#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qe2!
- 1...Qxg1
- 1.Ke8?
- 1...Qxg1
- 2.Sxf3#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qe2!
- 1...Qxg1
- 1.Kg8?
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe2
- 2.Qa5#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qxg1!
- 1...Qe3
- 1.Sh3?
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe2
- 2.Qa5#
- 1...Qe1
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Qe3#
- 1...Qc5
- 2.Qe1#
- 1...Qb6
- 2.Qe1#
- 1...Qa7
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Qe1#
- 2.Qe3#
- 1...Qxg1!
- 1...Qe3
- 1.Se4+?
- 1...Ke3
- 2.Re1#
- 1...Ke2!
- 1...Ke3
- 1.Se6?
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe2
- 2.Qa5#
- 1...Qe1
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Qe3#
- 1...Qc5
- 2.Qe1#
- 1...Qb6
- 2.Qe1#
- 1...Qa7
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Qe1#
- 2.Qe3#
- 1...Qxg1!
- 1...Qe3
- 1.Sh7?
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe2
- 2.Qa5#
- 1...Qe1
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Qe3#
- 1...Qc5
- 2.Qe1#
- 1...Qb6
- 2.Qe1#
- 1...Qa7
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Qe1#
- 2.Qe3#
- 1...Qxg1!
- 1...Qe3
- 1.Rc1?
- threat
- 2.Sb3#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qb6
- 2.Qe1#
- 1...Kxc1!
- threat
- 1.Rf1?
- 1...Qxg1
- 2.Sxf3#
- 2.Qe1#
- 1...Qe1
- 2.Qxe1#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe2
- 2.Qa5#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qxf1!
- 1...Qxg1
- 1.Qc3+?
- 1...Ke2
- 2.Qd3#
- 1...Kxc3!
- 1...Ke2
- 1.Qd4+?
- 1...Ke2
- 2.Qxf2#
- 2.Qd3#
- 1...Qxd4!
- 1...Ke2
- 1.Qf4+?
- 1...Kc3
- 2.Rb3#
- 1...Qe3
- 2.Qxe3#
- 1...Ke2!
- 1...Kc3
- 1.Qe4?
- threat
- 2.Qd3#
- 1...Kc3
- 2.Qd3#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qe2!
- threat
- 1.c5?
- 1...Qxg1
- 2.Sxf3#
- 1...Qxc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qe2!
- 1...Qxg1
- 1.d8Q?
- threat
- 2.Qda5#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7+!
- threat
- 1.d8S?
- 1...Qxg1
- 2.Sxf3#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe2
- 2.Qa5#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qa7+!
- 1...Qxg1
- 1.d8B?
- threat
- 2.Ba5#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7+!
- threat
- 1.d8R?
- 1...Qxg1
- 2.Sxf3#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe2
- 2.Qa5#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qa7+!
- 1...Qxg1
- 1.Ke6?
- Keys
- 1.Kf8!
- 1...Qxg1
- 2.Sxf3#
- 1...Qe3
- 2.Qxe3#
- 1...Qd4
- 2.Qe1#
- 1...Qe2
- 2.Qa5#
- 1...Qe1
- 2.Sxf3#
- 2.Qxe1#
- 1...Qg3
- 2.Qe3#
- 1...Qh4
- 2.Sxf3#
- 2.Qe3#
- 1...Qc5
- 2.Sxf3#
- 2.Qe1#
- 1...Qb6
- 2.Sxf3#
- 2.Qe1#
- 1...Qa7
- 2.Sxf3#
- 2.Qe1#
- 1...Qf1
- 2.Qe3#
- 1...Qg2
- 2.Qe1#
- 2.Qe3#
- 1...Qh2
- 2.Sxf3#
- 2.Qe1#
- 2.Qe3#
- 1...Qxg1
- 1.Kf8!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Tries
- Try
- K(J);S_FLIGHT
- Vars
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD,P_PINQ(F)::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Refutation
- Q(b);P_PINQ(F)
- Try
- K(J);P-FLIGHT
- Vars
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);N_GUARD,P_PINS(G)::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Refutation
- Q(b);P_PINQ(F)
- Try
- K(J);S_FLIGHT
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);N_GUARD,P_PINS(G)::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Refutation
- Q(b);P_PINS(G),XB(C)
- Try
- K(J);P-FLIGHT
- Vars
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD,P_PINQ(F)::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);N_GUARD,P_PINS(G)::QAB1(F)
- Refutation
- Q(b);P_PINQ(F)
- Try
- K(J);S_FLIGHT
- Vars
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD,P_PINQ(F)::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Refutation
- Q(b);P_PINQ(F)
- Try
- K(J);S_FLIGHT
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Q(b);N_GUARD,P_PINS(G)::QAB1(F)
- Refutation
- Q(b);P_PINS(G),XB(C)
- Try
- S(G);
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Q(b);N_GUARD,P_PINP(I)::QAB1(F)
- Refutation
- Q(b);XB(C)
- Try
- S(G);CHECK
- Vars
- K(a);P_SPINQ(b),S_FLIGHT::R(B)
- Refutation
- K(a);P-FLIGHT
- Try
- S(G);
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Q(b);N_GUARD,P_PINP(I)::QAB1(F)
- Refutation
- Q(b);XB(C)
- Try
- S(G);
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Q(b);N_GUARD,P_PINP(I)::QAB1(F)
- Refutation
- Q(b);XB(C)
- Try
- R(B);
- Threat
- S(A)
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Refutation
- K(a);S_FLIGHT,XR(B)
- Try
- R(B);
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Refutation
- Q(b);XR(B)
- Try
- Q(F);CHECK
- Vars
- K(a);P-FLIGHT::QAB1(F)
- Refutation
- K(a);S_FLIGHT,XQ(F)
- Try
- Q(F);CHECK
- Refutation
- Q(b);XQ(F)
- Try
- Q(F);CHECK
- Vars
- K(a);S_FLIGHT::R1(B)
- Q(b);N_GUARD,P_SPINQ(b)::QAB1(F),XQ(b)
- Refutation
- K(a);P-FLIGHT
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- K(a);S_FLIGHT::QAR1(F)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Refutation
- Q(b);
- Try
- P(E);
- Vars
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Refutation
- Q(b);
- Try
- P(I);
- Threat
- QAB(I)
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Refutation
- Q(b);CHECK
- Try
- P(I);
- Vars
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Refutation
- Q(b);CHECK
- Try
- P(I);
- Threat
- B(I)
- Vars
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Refutation
- Q(b);CHECK
- Try
- P(I);
- Vars
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
- Refutation
- Q(b);CHECK
- Try
- Actual
- K(J);P-FLIGHT
- Vars
- Q(b);N_GUARD,XB(C)::S(G),XP(c)
- Q(b);N_GUARD::QAB1(F),XQ(b)
- Q(b);N_GUARD::QAB1(F)
- Q(b);SBLOCK::QAB(F)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).