MESON Chess Problem Database
Problem Display
PID: 136680 (4r3/Q3pR2/3p4/3Pkp2/1p5B/1B4PK/2P2N1P/4r3 w - - 0 1)
Goethart, Gerhardus Hendrik
Handelsblad, 1916
#2
10 + 7
| 6490 | yacpdb | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qe3#
- 2.Qxa1#
- 1...Rb1
- 2.Qe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Rf1
- 2.Qe3#
- 1...Rg1
- 2.Qe3#
- 1...Rh1
- 2.Qe3#
- 1...Re2
- 2.Qa1#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Sd3#
- 1...Ra8
- 2.Rxe7#
- 1...Rb8
- 2.Rxe7#
- 1...Rc8
- 2.Rxe7#
- 1...Rd8
- 2.Rxe7#
- 1...Rf8
- 2.Rxe7#
- 1...Rg8
- 2.Rxe7#
- 1...Rh8
- 2.Rxe7#
- 1...f4
- 2.gxf4#
- 1...e6
- 2.Bf6#
- 1...Ra1
- Tries
- 1.Kg2?
- 1...Ra1
- 2.Qe3#
- 2.Qxa1#
- 1...Rb1
- 2.Qe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Rf1
- 2.Qe3#
- 1...Rh1
- 2.Qe3#
- 1...Re2
- 2.Qa1#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Sd3#
- 1...Ra8
- 2.Rxe7#
- 1...Rb8
- 2.Rxe7#
- 1...Rc8
- 2.Rxe7#
- 1...Rd8
- 2.Rxe7#
- 1...Rf8
- 2.Rxe7#
- 1...Rg8
- 2.Rxe7#
- 1...Rh8
- 2.Rxe7#
- 1...f4
- 2.gxf4#
- 1...e6
- 2.Bf6#
- 1...Rg1+!
- 1...Ra1
- 1.Bc4?
- 1...Re2
- 2.Qa1#
- 1...Ra1
- 2.Qe3#
- 2.Qxa1#
- 1...Rb1
- 2.Qe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Rf1
- 2.Qe3#
- 1...Rg1
- 2.Qe3#
- 1...Rh1
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Sd3#
- 1...Ra8
- 2.Rxe7#
- 1...Rb8
- 2.Rxe7#
- 1...Rc8
- 2.Rxe7#
- 1...Rd8
- 2.Rxe7#
- 1...Rf8
- 2.Rxe7#
- 1...Rg8
- 2.Rxe7#
- 1...Rh8
- 2.Rxe7#
- 1...f4
- 2.gxf4#
- 1...e6
- 2.Bf6#
- 1...b3!
- 1...Re2
- 1.Bg5?
- threat
- 2.Bf4#
- 1...Re4
- 2.Sd3#
- 1...f4
- 2.Bxf4#
- 2.gxf4#
- 1...Rh8+!
- threat
- 1.Qb6?
- 1...Ra1
- 2.Qe3#
- 1...Rb1
- 2.Qe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Rf1
- 2.Qe3#
- 1...Rg1
- 2.Qe3#
- 1...Rh1
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Sd3#
- 1...Ra8
- 2.Rxe7#
- 1...Rb8
- 2.Rxe7#
- 1...Rc8
- 2.Rxe7#
- 1...Rd8
- 2.Rxe7#
- 1...Rf8
- 2.Rxe7#
- 1...Rg8
- 2.Rxe7#
- 1...Rh8
- 2.Rxe7#
- 1...f4
- 2.gxf4#
- 1...e6
- 2.Bf6#
- 1...Re2!
- 1...Ra1
- 1.Qxe7+?
- 1...Rxe7
- 2.Bf6#
- 1...Kd4!
- 1...Rxe7
- 1.c3?
- threat
- 2.Qd4#
- 1...Rd1
- 2.Qe3#
- 1...Re4
- 2.Sd3#
- 1...bxc3!
- threat
- 1.Kg2?
- Keys
- 1.Rh7!
- 1...f4
- 2.Rh5#
- 1...Re2
- 2.Qa1#
- 1...Ra1
- 2.Qe3#
- 2.Qxa1#
- 1...Rb1
- 2.Qe3#
- 1...Rc1
- 2.Qe3#
- 1...Rd1
- 2.Qe3#
- 1...Rf1
- 2.Qe3#
- 1...Rg1
- 2.Qe3#
- 1...Rh1
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Re4
- 2.Sd3#
- 1...Ra8
- 2.Rxe7#
- 1...Rb8
- 2.Rxe7#
- 1...Rc8
- 2.Rxe7#
- 1...Rd8
- 2.Rxe7#
- 1...Rf8
- 2.Rxe7#
- 1...Rg8
- 2.Rxe7#
- 1...Rh8
- 2.Rxe7#
- 1...e6
- 2.Qg7#
- 1...f4
- 1.Rh7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD,P_PINP(C)::QAR2(I)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD,P_PINP(E)::QAR2(I),XR(a)
- R(a);SBLOCK::S(B)
- R(g);N_GUARD::R(J),XP(f)
- R(g);N_GUARD,P_PINB(G)::R(J),XP(f)
- P(d);OGATE::P(E),XP(d)
- P(f);N_GUARD::B(G)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD,P_PINS(B)::QAB(I)
- R(a);N_GUARD::QAR2(I),XR(a)
- R(a);SBLOCK::S(B)
- R(g);N_GUARD::R(J),XP(f)
- R(g);N_GUARD,P_PINP(E)::R(J),XP(f)
- P(d);OGATE::P(E),XP(d)
- P(f);N_GUARD::B(G)
- Refutation
- R(a);CHECK
- Try
- B(D);
- Vars
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD,P_PINP(C)::QAR2(I)
- R(a);N_GUARD,P_PINP(E)::QAR2(I),XR(a)
- R(a);SBLOCK::S(B)
- R(g);N_GUARD::R(J),XP(f)
- R(g);N_GUARD,P_PINB(G)::R(J),XP(f)
- P(d);OGATE::P(E),XP(d)
- P(f);N_GUARD::B(G)
- Refutation
- P(b);
- Try
- B(G);
- Threat
- B(G)
- Vars
- R(a);SBLOCK::S(B)
- Refutation
- R(g);CHECK
- Try
- Q(I);
- Vars
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD,P_PINP(C)::QAR2(I)
- R(a);N_GUARD,P_PINP(E)::QAR2(I),XR(a)
- R(a);SBLOCK::S(B)
- R(g);N_GUARD::R(J),XP(f)
- R(g);N_GUARD,P_PINB(G)::R(J),XP(f)
- P(d);OGATE::P(E),XP(d)
- P(f);N_GUARD::B(G)
- Refutation
- R(a);
- Try
- Q(I);CHECK,XP(f)
- Vars
- R(g);XQ(I)::B(G)
- Refutation
- K(c);S_FLIGHT
- Try
- P(A);
- Threat
- QAB1(I)
- Vars
- R(a);N_GUARD::QAR2(I)
- R(a);SBLOCK::S(B)
- Refutation
- P(b);XP(A)
- Try
- Actual
- R(J);
- Vars
- P(d);OGATEB::R(J)
- R(a);N_GUARD::QAB(I)
- R(a);N_GUARD::QAR2(I)
- R(a);N_GUARD,P_PINP(C)::QAR2(I)
- R(a);N_GUARD,P_PINP(E)::QAR2(I),XR(a)
- R(a);SBLOCK::S(B)
- R(g);N_GUARD::R(J),XP(f)
- P(f);OGATE::QAB(I)
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).