MESON Chess Problem Database
Problem Display
PID: 250138 (8/3p2p1/3pqpB1/KR2br2/N3knnN/8/2PQ4/2B5 w - - 0 1)
Henke, Walter
Arbeiter Schachkalendar, 1927
#2
8 + 10
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Bxf5#
- 1...Qb3
- 2.Bxf5#
- 1...Qc4
- 2.Bxf5#
- 1...Qd5
- 2.Bxf5#
- 1...Qf7
- 2.Bxf5#
- 1...Qg8
- 2.Bxf5#
- 1...Qe7
- 2.Bxf5#
- 1...Qe8
- 2.Bxf5#
- 1...Ba1
- 2.Qxf4#
- 1...Bb2
- 2.Qxf4#
- 1...Bc3+
- 2.Sxc3#
- 1...Bd4
- 2.Qxf4#
- 1...Se2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sh5
- 2.Qd3#
- 1...Sxg6
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...d5
- 2.Sc5#
- 1...Qa2
- Tries
- 1.Ka6?
- 1...Sxg6
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Qa2
- 2.Bxf5#
- 1...Qb3
- 2.Bxf5#
- 1...Qc4
- 2.Bxf5#
- 1...Qd5
- 2.Bxf5#
- 1...Qf7
- 2.Bxf5#
- 1...Qg8
- 2.Bxf5#
- 1...Qe7
- 2.Bxf5#
- 1...Qe8
- 2.Bxf5#
- 1...Ba1
- 2.Qxf4#
- 1...Bb2
- 2.Qxf4#
- 1...Bc3
- 2.Sxc3#
- 2.Qxf4#
- 1...Bd4
- 2.Qxf4#
- 1...Se2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sh3
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sh5
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...d5+!
- 1...Sxg6
- 1.Rb4+?
- 1...Qc4
- 2.Bxf5#
- 1...Bd4+!
- 1...Qc4
- 1.Rc5?
- 1...Bc3+
- 2.Sxc3#
- 1...Sxg6
- 2.Qd3#
- 1...dxc5
- 2.Sxc5#
- 1...Sd3
- 2.Qxd3#
- 1...Qa2
- 2.Bxf5#
- 1...Qb3
- 2.Bxf5#
- 1...Qc4
- 2.Bxf5#
- 1...Qd5
- 2.Bxf5#
- 1...Qf7
- 2.Bxf5#
- 1...Qg8
- 2.Bxf5#
- 1...Qe7
- 2.Bxf5#
- 1...Qe8
- 2.Bxf5#
- 1...Ba1
- 2.Qxf4#
- 1...Bb2
- 2.Qxf4#
- 1...Bd4
- 2.Qxf4#
- 1...Se2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sh3
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sh5
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...d5!
- 1...Bc3+
- 1.Qc3?
- 1...Sxg6
- 2.Qd3#
- 1...Qa2
- 2.Bxf5#
- 1...Qb3
- 2.Bxf5#
- 1...Qc4
- 2.Bxf5#
- 1...Qd5
- 2.Bxf5#
- 1...Qf7
- 2.Bxf5#
- 1...Qg8
- 2.Bxf5#
- 1...Qe7
- 2.Bxf5#
- 1...Qe8
- 2.Bxf5#
- 1...Bd4
- 2.Qf3#
- 1...Se2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.cxd3#
- 1...Sh3
- 2.Qd3#
- 1...Sd5
- 2.Qd3#
- 1...Sh5
- 2.Qd3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...d5
- 2.Sc5#
- 1...Bxc3+!
- 1...Sxg6
- 1.Qb4+?
- 1...Bd4
- 2.Sc3#
- 1...Qc4!
- 1...Bd4
- 1.Qe2+?
- 1...Kd4
- 2.Sf3#
- 2.Bb2#
- 2.c3#
- 1...Se3
- 2.Qxe3#
- 1...Sxe2!
- 1...Kd4
- 1.Ka6?
- Keys
- 1.c3!
- 1...Bxc3+
- 2.Sxc3#
- 1...Sxg6
- 2.Qc2#
- 1...Qa2
- 2.Bxf5#
- 1...Qb3
- 2.Bxf5#
- 1...Qc4
- 2.Bxf5#
- 1...Qd5
- 2.Bxf5#
- 1...Qf7
- 2.Bxf5#
- 1...Qg8
- 2.Bxf5#
- 1...Qe7
- 2.Bxf5#
- 1...Qe8
- 2.Bxf5#
- 1...Bd4
- 2.Qxd4#
- 1...Se2
- 2.Qc2#
- 1...Sg2
- 2.Qc2#
- 1...Sd3
- 2.Qg2#
- 1...Sh3
- 2.Qc2#
- 1...Sd5
- 2.Qc2#
- 1...Sh5
- 2.Qc2#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh6
- 2.Qe3#
- 1...d5
- 2.Sc5#
- 1...Bxc3+
- 1.c3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(g);N_GUARD,P_PINS(D)::B(H),XR(e)
- Q(g);N_GUARD::B(H),XR(e)
- Q(g);N_GUARD,P_PINR(G)::B(H),XR(e)
- B(d);N_GUARD,P_PINR(G)::QAR1(C),XS(b)
- B(d);CHECK,N_GUARD,P_PINR(G)::S(D),XB(d)
- B(d);N_GUARD,P_PINR(G),SBLOCK::QAR1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- S(b);N_GUARD::QAB1(C),XS(b)
- S(b);N_GUARD,N_SPINR(e),XB(H)::QAB1(C)
- S(c);N_GUARD::QAR1(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- P(f);N_GUARD::S(D)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- S(b);N_GUARD,N_SPINR(e),XB(H)::QAB1(C)
- S(b);N_GUARD::QAB1(C),XS(b)
- Q(g);N_GUARD,P_PINS(D)::B(H),XR(e)
- Q(g);N_GUARD::B(H),XR(e)
- Q(g);N_GUARD,P_PINR(G)::B(H),XR(e)
- B(d);N_GUARD::QAR1(C),XS(b)
- B(d);N_GUARD,SBLOCK::QAR1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- S(c);N_GUARD::QAR1(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- Refutation
- P(f);CHECK
- Try
- R(G);CHECK
- Vars
- Q(g);P_SPINQ(g)::B(H),XR(e)
- Refutation
- B(d);CHECK,P_SPINB(d)
- Try
- R(G);
- Vars
- B(d);CHECK,N_GUARD,P_PINR(G)::S(D),XB(d)
- S(b);N_GUARD,N_SPINR(e),XB(H)::QAB1(C)
- P(f);XR(G)::S(D),XP(f)
- S(b);N_GUARD::QAB1(C),XS(b)
- Q(g);N_GUARD,P_PINS(D)::B(H),XR(e)
- Q(g);N_GUARD::B(H),XR(e)
- Q(g);N_GUARD,P_PINR(G)::B(H),XR(e)
- B(d);N_GUARD,P_PINR(G)::QAR1(C),XS(b)
- B(d);N_GUARD,P_PINR(G),SBLOCK::QAR1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- S(c);N_GUARD::QAR1(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- Refutation
- P(f);
- Try
- Q(C);
- Vars
- S(b);N_GUARD,N_SPINR(e),XB(H)::QAB1(C)
- Q(g);N_GUARD,P_PINS(D)::B(H),XR(e)
- Q(g);N_GUARD::B(H),XR(e)
- Q(g);N_GUARD,P_PINR(G)::B(H),XR(e)
- B(d);P_PINR(G),SBLOCK::QAB1(C)
- S(b);N_GUARD::QAB1(C)
- S(c);N_GUARD::QAR1(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- P(f);N_GUARD,SBLOCK::S(D)
- Refutation
- B(d);CHECK,P_PINR(G),XQ(C)
- Try
- Q(C);CHECK
- Vars
- B(d);P_PINR(G),P_SPINB(d)::S(D)
- Refutation
- Q(g);P_SPINQ(g)
- Try
- Q(C);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAR1(C),XS(c)
- Refutation
- S(b);XQ(C)
- Try
- Actual
- P(B);
- Vars
- B(d);CHECK,P_PINR(G),XP(B)::S(D),XB(d)
- S(b);N_GUARD,N_SPINR(e),XB(H)::QAB(C)
- Q(g);N_GUARD,P_PINS(D)::B(H),XR(e)
- Q(g);N_GUARD::B(H),XR(e)
- Q(g);N_GUARD,P_PINR(G)::B(H),XR(e)
- B(d);N_GUARD,P_PINR(G)::QAR1(C),XB(d)
- S(b);N_GUARD::QAB(C)
- S(b);N_GUARD,SBLOCK::QAB(C)
- S(c);N_GUARD::QAR1(C)
- S(c);N_GUARD::QAR1(C),XS(c)
- P(f);N_GUARD::S(D)
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).