MESON Chess Problem Database
Problem Display
PID: 266827 (2BQ4/2N2P1p/2p1Prpr/2p2k1p/2R3pb/6B1/5P2/4K3 w - - 0 1)
Andersson, Harry
Schackvarlden, 1934
#2
9 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kg5
- 2.Rxc5#
- 1...Rxe6+
- 2.Bxe6#
- 1...Rxf7
- 2.exf7#
- 1...Bg5
- 2.Qd3#
- 1...g5
- 2.Qd3#
- 1...Kg5
- Tries
- 1.Kd1?
- 1...Kg5
- 2.Rxc5#
- 1...Rxe6
- 2.Bxe6#
- 1...Rxf7
- 2.exf7#
- 1...Bg5
- 2.Qd3#
- 1...g5
- 2.Qd3#
- 1...Bxg3!
- 1...Kg5
- 1.Kf1?
- 1...Kg5
- 2.Rxc5#
- 1...Rxe6
- 2.Bxe6#
- 1...Rxf7
- 2.exf7#
- 1...Bg5
- 2.Qd3#
- 1...g5
- 2.Qd3#
- 1...Bxg3!
- 1...Kg5
- 1.Ke2?
- 1...Rxe6+
- 2.Bxe6#
- 1...Kg5
- 2.Rxc5#
- 1...Rxf7
- 2.exf7#
- 1...Bg5
- 2.Qd3#
- 1...g5
- 2.Qd3#
- 1...Bxg3!
- 1...Rxe6+
- 1.Se8?
- 1...Kg5
- 2.Rxc5#
- 2.Qxf6#
- 1...Rxf7
- 2.Sd6#
- 2.exf7#
- 1...Bxg3
- 2.Qxf6#
- 1...Bg5
- 2.Sd6#
- 2.Sg7#
- 2.Qd3#
- 1...g5
- 2.Qd3#
- 1...Rxe6+!
- 1...Kg5
- 1.Rf4+?
- 1...Kg5
- 2.Qxf6#
- 1...Ke5!
- 1...Kg5
- 1.f8Q?
- threat
- 2.Qxc5#
- 1...Kg5
- 2.Rxc5#
- 2.Qdxf6#
- 2.Qxc5#
- 2.Qfxf6#
- 1...Bxg3
- 2.Qdxf6#
- 2.Qfxf6#
- 1...g5
- 2.Qd3#
- 1...Rxf8!
- threat
- 1.f8R?
- 1...Kg5
- 2.Rxc5#
- 2.Qxf6#
- 1...Bxg3
- 2.Qxf6#
- 1...Rf7
- 2.exf7#
- 1...Bg5
- 2.Qd3#
- 2.e7#
- 1...g5
- 2.Qd3#
- 1...Rxf8!
- 1...Kg5
- 1.Kd1?
- Keys
- 1.Sd5!
- 1...Rxe6+
- 2.Se3#
- 1...Kg5
- 2.Qxf6#
- 1...Rxf7
- 2.Se3#
- 2.exf7#
- 1...Bxg3
- 2.Qxf6#
- 1...cxd5
- 2.Qxd5#
- 1...Bg5
- 2.Se7#
- 1...g5
- 2.Se7#
- 1...Rxe6+
- 1.Sd5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- K(d);N_GUARD,P-FLIGHT,P_SPINR(g)::R(D),XP(c)
- R(g);CHECK,OGATE,P_SPINR(g),XP(E)::B(H),XR(g)
- R(g);OGATE,XP(G)::B(H)+P(E),XR(g)
- B(b);SBLOCK::QAB(I)
- P(h);SBLOCK::QAB(I)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- K(d);N_GUARD,P-FLIGHT,P_SPINR(g)::R(D),XP(c)
- R(g);OGATE,P_SPINR(g),XP(E)::B(H),XR(g)
- R(g);OGATE,XP(G)::B(H)+P(E),XR(g)
- B(b);SBLOCK::QAB(I)
- P(h);SBLOCK::QAB(I)
- Refutation
- B(b);XB(C)
- Try
- K(A);P-FLIGHT
- Vars
- K(d);N_GUARD,P-FLIGHT,P_PINP(B),P_SPINR(g)::R(D),XP(c)
- R(g);OGATE,P_SPINR(g),XP(E)::B(H),XR(g)
- R(g);OGATE,XP(G)::B(H)+P(E),XR(g)
- B(b);SBLOCK::QAB(I)
- P(h);SBLOCK::QAB(I)
- Refutation
- B(b);XB(C)
- Try
- K(A);P-FLIGHT
- Vars
- R(g);CHECK,OGATE,P_SPINR(g),XP(E)::B(H),XR(g)
- K(d);N_GUARD,P-FLIGHT,P_SPINR(g)::R(D),XP(c)
- R(g);OGATE,XP(G)::B(H)+P(E),XR(g)
- B(b);SBLOCK::QAB(I)
- P(h);SBLOCK::QAB(I)
- Refutation
- B(b);XB(C)
- Try
- S(F);
- Vars
- B(b);N_GUARD,P_PINP(B),XB(C)::QAR1(I),XR(g)
- P(h);SBLOCK::QAB(I)
- Refutation
- R(g);CHECK,P_SPINR(g),XP(E)
- Try
- R(D);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINR(g)::QAB1(I),XR(g)
- Refutation
- K(d);P-FLIGHT
- Try
- P(G);P_PINR(g)
- Threat
- QAR(G),XP(c)
- Vars
- P(h);SBLOCK::QAB(I)
- Refutation
- R(g);N_SPINR(g),XQ(G)
- Try
- P(G);P_PINR(g)
- Vars
- B(b);N_GUARD,P_PINP(B),XB(C)::QAR1(I),XR(g)
- R(g);OGATE::B(H)+P(E),XR(g)
- P(h);SBLOCK::QAB(I)
- Refutation
- R(g);N_SPINR(g),XR(G)
- Try
- Actual
- S(F);
- Vars
- R(g);CHECK,P_SPINR(g),XP(E)::S(F)
- K(d);P-FLIGHT,P_SPINR(g),S_CUTB(b)::QAB1(I),XR(g)
- B(b);N_GUARD,P_PINP(B),XB(C)::QAR1(I),XR(g)
- P(f);OGATE,XS(F)::QAR2(I),XP(f)
- B(b);SBLOCK::S(F)
- P(h);SBLOCK::S(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).