MESON Chess Problem Database
Problem Display
PID: 173637 (2R5/B3p1RP/2b1B3/2N2p1P/3kNr2/1P2r1Q1/1p2PPn1/1K6 w - - 0 1)
Boros, Sandor
1st Prize, Nepszava, 1935
#2
13 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.Qc3#
- 1...Rc3
- 2.Qxc3#
- 1...Rexe4
- 2.Sd7#
- 1...Rfxe4
- 2.Sa4#
- 1...Bxe4+
- 2.Sd3#
- 1...Rxe2
- Tries
- 1.Rg6?
- threat
- 2.h8Q#
- 2.h8B#
- 1...Bxe4+
- 2.Sd3#
- 1...Ke5
- 2.h8Q#
- 2.h8B#
- 1...Rxe2
- 2.Qc3#
- 2.h8Q#
- 2.h8B#
- 1...Rxb3
- 2.h8Q#
- 2.h8B#
- 1...Rxg3
- 2.h8Q#
- 2.h8B#
- 1...Rexe4
- 2.Sd7#
- 1...Rxf2
- 2.h8Q#
- 2.h8B#
- 1...Rfxe4
- 2.Sa4#
- 1...Rc3
- 2.Qxc3#
- 2.h8Q#
- 2.h8B#
- 1...Rd3
- 2.h8Q#
- 2.h8B#
- 1...Ref3
- 2.h8Q#
- 2.h8B#
- 1...Rff3
- 2.h8Q#
- 2.h8B#
- 1...Rg4
- 2.h8Q#
- 2.h8B#
- 1...Rh4
- 2.h8Q#
- 2.h8B#
- 1...Ba4
- 2.h8Q#
- 2.h8B#
- 1...Bb5
- 2.h8Q#
- 2.h8B#
- 1...Bd5
- 2.h8Q#
- 2.h8B#
- 1...Bb7
- 2.h8Q#
- 2.h8B#
- 1...Bd7
- 2.h8Q#
- 2.h8B#
- 1...Ba8
- 2.h8Q#
- 2.h8B#
- 1...Be8
- 2.h8Q#
- 2.h8B#
- 1...Se1
- 2.h8Q#
- 2.h8B#
- 1...Sh4
- 2.h8Q#
- 2.h8B#
- 1...fxe4!
- threat
- 1.Rd8+?
- 1...Ke5
- 2.Bb8#
- 1...Bd5
- 2.Rxd5#
- 1...Bd7!
- 1...Ke5
- 1.Qxe3+?
- 1...Ke5
- 2.Bb8#
- 2.Qc3#
- 1...Sxe3!
- 1...Ke5
- 1.fxe3+?
- 1...Ke5
- 2.Bb8#
- 1...Sxe3!
- 1...Ke5
- 1.h8Q?
- threat
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rxe7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Bxe4+
- 2.Sd3#
- 1...Ke5
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rxe7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Rxg3
- 2.Rxg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Rexe4
- 2.Sd7#
- 1...Rfxe4
- 2.Sa4#
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 2.Rg5#
- 2.Rg6#
- 1...fxe4!
- threat
- 1.h8B?
- threat
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rxe7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Bxe4+
- 2.Sd3#
- 1...Ke5
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rxe7#
- 2.Rf7#
- 2.Rh7#
- 2.Rgg8#
- 1...Rxg3
- 2.Rxg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Rexe4
- 2.Sd7#
- 1...Rfxe4
- 2.Sa4#
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 2.Rg5#
- 2.Rg6#
- 1...fxe4!
- threat
- 1.Rg6?
- Keys
- 1.Rg5!
- threat
- 2.h8Q#
- 2.h8B#
- 1...Bxe4+
- 2.Sd3#
- 1...Ke5
- 2.h8Q#
- 2.h8B#
- 1...Rxe2
- 2.Qc3#
- 2.h8Q#
- 2.h8B#
- 1...Rxb3
- 2.h8Q#
- 2.h8B#
- 1...Rxg3
- 2.h8Q#
- 2.h8B#
- 1...Rexe4
- 2.Sd7#
- 1...Rxf2
- 2.h8Q#
- 2.h8B#
- 1...Rfxe4
- 2.Sa4#
- 1...fxe4
- 2.Sa4#
- 1...Rc3
- 2.Qxc3#
- 2.h8Q#
- 2.h8B#
- 1...Rd3
- 2.h8Q#
- 2.h8B#
- 1...Ref3
- 2.h8Q#
- 2.h8B#
- 1...Rff3
- 2.h8Q#
- 2.h8B#
- 1...Rg4
- 2.h8Q#
- 2.h8B#
- 1...Rh4
- 2.h8Q#
- 2.h8B#
- 1...Ba4
- 2.h8Q#
- 2.h8B#
- 1...Bb5
- 2.h8Q#
- 2.h8B#
- 1...Bd5
- 2.h8Q#
- 2.h8B#
- 1...Bb7
- 2.h8Q#
- 2.h8B#
- 1...Bd7
- 2.h8Q#
- 2.h8B#
- 1...Ba8
- 2.h8Q#
- 2.h8B#
- 1...Be8
- 2.h8Q#
- 2.h8B#
- 1...Se1
- 2.h8Q#
- 2.h8B#
- 1...Sh4
- 2.h8Q#
- 2.h8B#
- threat
- 1.Rg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- R(c);OGATE,XP(B)::QAB1(E)
- R(c);OGATE::QAB1(E),XR(c)
- R(c);SBLOCK,XS(F)::B(J)+S(G)
- R(e);SBLOCK,XS(F)::B(J)+S(G)
- B(g);CHECK,SBLOCK,XS(F)::B(J)+S(G)
- Tries
- Try
- R(K);
- Threat
- P=Q
- Vars
- B(g);CHECK,SBLOCK,XS(F)::B(J)+S(G)
- K(d);P_SPINR(e),S_FLIGHT::P=Q
- R(c);XP(D)::P=Q
- R(c);XQ(E)::P=Q
- R(c);SBLOCK,XS(F)::B(J)+S(G)
- R(e);XP(C)::P=Q
- R(e);SBLOCK,XS(F)::B(J)+S(G)
- R(c);::P=Q
- R(e);::P=Q
- B(g);::P=Q
- S(b);::P=Q
- Refutation
- P(f);XS(F)
- Try
- R(M);CHECK
- Vars
- K(d);P_SPINR(e),S_FLIGHT::B(J)
- B(g);N_GUARD,P_SPINB(g)::R1(M),XB(g)
- Refutation
- B(g);P_SPINB(g)
- Try
- Q(E);CHECK,XR(c)
- Refutation
- S(b);XQ(E)
- Try
- P(C);CHECK,XR(c)
- Vars
- K(d);P_SPINR(e),S_FLIGHT::B(J)
- Refutation
- S(b);XP(C)
- Try
- P(L);
- Threat
- DUALS(7)
- Vars
- B(g);CHECK,SBLOCK,XS(F)::B(J)+S(G)
- R(c);SBLOCK,XS(F)::B(J)+S(G)
- Refutation
- P(f);XS(F)
- Try
- P(L);
- Threat
- DUALS(7)
- Vars
- B(g);CHECK,SBLOCK,XS(F)::B(J)+S(G)
- R(c);SBLOCK,XS(F)::B(J)+S(G)
- Refutation
- P(f);XS(F)
- Try
- Actual
- R(K);
- Threat
- P=Q
- Vars
- B(g);CHECK,SBLOCK,XS(F)::B(J)+S(G)
- K(d);P_SPINP(f),P_SPINR(e),S_FLIGHT::P=Q
- R(c);XP(D)::P=Q
- R(c);XQ(E)::P=Q
- R(c);SBLOCK,XS(F)::B(J)+S(G)
- R(e);XP(C)::P=Q
- R(e);SBLOCK,XS(F)::B(J)+S(G)
- P(f);SBLOCK,XS(F)::B(J)+S(G)
- R(c);::P=Q
- R(e);::P=Q
- B(g);::P=Q
- S(b);::P=Q
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).