MESON Chess Problem Database
Problem Display
PID: 251363 (n1K5/4bB1p/1pN5/3N4/1p2k1P1/1R2Bp2/R3Pr1n/1b4rQ w - - 0 1)
den Toom, Bas
Probleemblad, 1982
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Rgg2
- 2.Qxb1#
- 1...Rg3
- 2.Qxb1#
- 1...Rxg4
- 2.Qxb1#
- 1...Bd3
- 2.exd3#
- 1...Bh4
- 2.Rxb4#
- 1...Bc5
- 2.Sf6#
- 1...Bg5
- 2.Rxb4#
- 1...Bd6
- 2.Sf6#
- 1...Bf6
- 2.Sxf6#
- 1...Bd8
- 2.Rxb4#
- 1...Bf8
- 2.Sf6#
- 1...Sf1
- 2.Qxh7#
- 1...Sxg4
- 2.Qxh7#
- 1...Rgg2
- Tries
- 1.Bc1?
- threat
- 2.Re3#
- 1...Rxe2
- 2.Rxe2#
- 1...Sxg4
- 2.Qxh7#
- 1...Bd3
- 2.exd3#
- 1...Bc5
- 2.Sf6#
- 1...Bg5
- 2.Rxb4#
- 1...Sf1
- 2.Qxh7#
- 1...Rxg4!
- threat
- 1.Bd2?
- threat
- 2.Re3#
- 1...Rxg4
- 2.Qxb1#
- 1...Sxg4
- 2.Qxh7#
- 1...Bd3
- 2.exd3#
- 1...Bc5
- 2.Sf6#
- 1...Bg5
- 2.Rxb4#
- 1...Sf1
- 2.Qxh7#
- 1...Rxe2!
- threat
- 1.Bxf2?
- threat
- 2.Re3#
- 1...Rxg4
- 2.Qxb1#
- 1...Sxg4
- 2.Qxf3#
- 2.Qxh7#
- 1...Bd3
- 2.exd3#
- 1...Bg5
- 2.Rxb4#
- 1...Sf1
- 2.Qxf3#
- 2.Qxh7#
- 2.exf3#
- 1...Bc5!
- threat
- 1.Bd4?
- threat
- 2.Re3#
- 1...Rxg4
- 2.Qxb1#
- 1...Rxe2
- 2.Rxe2#
- 1...Sxg4
- 2.Qxh7#
- 1...Bd3
- 2.exd3#
- 1...Sf1
- 2.Qxh7#
- 1...Bg5!
- threat
- 1.Bf4?
- threat
- 2.Re3#
- 1...Rxg4
- 2.Qxb1#
- 1...Rxe2
- 2.Rxe2#
- 1...Sxg4
- 2.Qxh7#
- 1...Bd3
- 2.exd3#
- 1...Sf1
- 2.Qxh7#
- 1...Bc5!
- threat
- 1.Bc5?
- threat
- 2.Re3#
- 2.Rxb4#
- 1...Rxg4
- 2.Qxb1#
- 1...Rxe2
- 2.Rxe2#
- 1...Bxa2
- 2.Re3#
- 1...Sxg4
- 2.Qxh7#
- 1...bxc5
- 2.Re3#
- 1...Rd1
- 2.Re3#
- 1...Rc1
- 2.Re3#
- 1...Bd3
- 2.exd3#
- 1...Bg5
- 2.Rxb4#
- 1...Bf6
- 2.Re3#
- 1...Sf1
- 2.Rxb4#
- 2.Qxh7#
- 1...Bxc5!
- threat
- 1.Rd2?
- threat
- 2.Rd4#
- 1...Rxg4
- 2.Qxb1#
- 1...Sxg4
- 2.Qxh7#
- 1...Bc5
- 2.Sf6#
- 1...Bd3
- 2.exd3#
- 1...Bf6
- 2.Sxf6#
- 1...Rd1!
- threat
- 1.Ra7?
- threat
- 2.Rxe7#
- 1...Rxg4
- 2.Qxb1#
- 1...Sxg4
- 2.Qxh7#
- 1...Bh4
- 2.Rxb4#
- 1...Bc5
- 2.Sf6#
- 1...Bg5
- 2.Rxb4#
- 1...Bd6
- 2.Sf6#
- 1...Bf6
- 2.Sxf6#
- 1...Bd8
- 2.Rxb4#
- 1...Bf8
- 2.Sf6#
- 1...Sc7!
- threat
- 1.exf3+?
- 1...Sxf3
- 2.Qxh7#
- 1...Rxf3!
- 1...Sxf3
- 1.Bc1?
- Keys
- 1.Bg5!
- threat
- 2.Re3#
- 1...Rxg4
- 2.Qxb1#
- 1...Rxe2
- 2.Rxe2#
- 1...Bxg5
- 2.Rxb4#
- 1...Sxg4
- 2.Qxh7#
- 1...Bd3
- 2.exd3#
- 1...Bc5
- 2.Sf6#
- 1...Sf1
- 2.Qxh7#
- threat
- 1.Bg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(b);N_SPINP(e),OGATE::QAB(A),XB(a)
- R(b);OGATE::QAB(A),XB(a)
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- B(a);OGATE::P(C),XB(a)
- B(i);N_GUARD::R(D),XP(f)
- B(i);N_GUARD::S(G)
- B(i);N_GUARD::S(G),XB(i)
- S(d);OGATE::QAB(A),XP(j)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- Tries
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(c);OGATE,XP(C)::R(B),XR(c)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- B(a);OGATE::P(C),XB(a)
- B(i);N_GUARD::S(G)
- B(i);N_GUARD::R(D),XP(f)
- S(d);OGATE::QAB(A),XP(j)
- Refutation
- R(b);XP(F)
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- B(a);OGATE::P(C),XB(a)
- B(i);N_GUARD::S(G)
- B(i);N_GUARD::R(D),XP(f)
- S(d);OGATE::QAB(A),XP(j)
- Refutation
- R(c);XP(C)
- Try
- B(E);XR(c)
- Threat
- R1(D)
- Vars
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- B(a);OGATE::P(C),XB(a)
- B(i);N_GUARD::R(D),XP(f)
- Refutation
- B(i);
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- R(c);OGATE,XP(C)::R(B),XR(c)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- B(a);OGATE::P(C),XB(a)
- S(d);OGATE::QAB(A),XP(j)
- Refutation
- B(i);
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- R(c);OGATE,XP(C)::R(B),XR(c)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- B(a);OGATE::P(C),XB(a)
- S(d);OGATE::QAB(A),XP(j)
- Refutation
- B(i);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- R(c);OGATE,XP(C)::R(B),XR(c)
- B(a);XR(B)::R1(D)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- P(h);XB(E)::R1(D)
- R(b);::R1(D)
- B(a);OGATE::P(C),XB(a)
- B(i);::R(D),XP(f)
- B(i);::R1(D)
- Refutation
- B(i);XB(E)
- Try
- R(B);
- Threat
- R1(B)
- Vars
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- B(i);N_GUARD::S(G)
- B(a);OGATE::P(C),XB(a)
- B(i);N_GUARD::S(G),XB(i)
- Refutation
- R(b);
- Try
- R(B);
- Threat
- R(B),XB(i)
- Vars
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- B(i);N_GUARD::R(D),XP(f)
- B(i);N_GUARD::S(G)
- B(i);N_GUARD::S(G),XB(i)
- Refutation
- S(k);
- Try
- P(C);CHECK,XP(e)
- Vars
- S(d);OGATE,P_SPINS(d),SBLOCK,XP(C)::QAB(A),XP(j)
- Refutation
- R(c);P_SPINR(c),XP(C)
- Try
- Actual
- B(E);
- Threat
- R1(D)
- Vars
- R(b);OGATE,XP(F)::QAB(A),XB(a)
- R(c);OGATE,XP(C)::R(B),XR(c)
- B(i);N_GUARD,XB(E)::R(D),XP(f)
- S(d);OGATE,XP(F)::QAB(A),XP(j)
- B(a);OGATE::P(C),XB(a)
- B(i);N_GUARD::S(G)
- S(d);OGATE::QAB(A),XP(j)
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).