MESON Chess Problem Database
Problem Display
PID: 29683 (4brB1/6QP/6pK/1Nb1Pk2/4R1p1/3rpPPn/1BN5/8 w - - 0 1)
Heyl, Peter
Troll, 2001
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Sxe3#
- 1...Rf6
- 2.Qxf6#
- 1...Rf7
- 2.Qxg6#
- 1...Rxg8
- 2.Qf6#
- 1...Bd4
- 2.Sd6#
- 1...Bxb5
- 2.Qxg6#
- 1...Bc6
- 2.Qxg6#
- 1...Bd7
- 2.Qxg6#
- 1...Bf7
- 2.Qf6#
- 1...Sg1
- 2.Rf4#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rf4#
- 1...Rd4
- Tries
- 1.Scd4+?
- 1...Bxd4
- 2.Sd6#
- 1...Rxd4!
- 1...Bxd4
- 1.Sc3?
- threat
- 2.fxg4#
- 1...Rxg8
- 2.Qf6#
- 1...gxf3
- 2.g4#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Qf6#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Rxc3!
- threat
- 1.Sbd4+?
- 1...Rxd4
- 2.Sxe3#
- 1...Bxd4!
- 1...Rxd4
- 1.Bd5?
- threat
- 2.fxg4#
- 1...gxf3
- 2.g4#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Rxd5!
- threat
- 1.Bf7?
- threat
- 2.Qf6#
- 2.Qxg6#
- 1...Rxf7
- 2.Qxg6#
- 1...Bxf7
- 2.Qf6#
- 1...gxf3
- 2.Qxg6#
- 1...Rg8
- 2.Qf6#
- 1...Be7
- 2.Qxg6#
- 1...Sf4
- 2.Rxf4#
- 2.Qf6#
- 1...g5
- 2.Qf6#
- 2.Qg6#
- 1...Rd6!
- threat
- 1.Ra4?
- threat
- 2.fxg4#
- 1...Rxg8
- 2.Qf6#
- 1...gxf3
- 2.g4#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Qf6#
- 1...Rd4
- 2.Sxe3#
- 1...Bd4
- 2.Sd6#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Bb4!
- threat
- 1.Rb4?
- threat
- 2.fxg4#
- 1...Rxg8
- 2.Qf6#
- 1...gxf3
- 2.g4#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Qf6#
- 1...Rd4
- 2.Sxe3#
- 1...Bd4
- 2.Sd6#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Bxb4!
- threat
- 1.Rd4?
- threat
- 2.fxg4#
- 1...Rxd4
- 2.Sxe3#
- 1...Rxg8
- 2.Qf6#
- 1...Bxd4
- 2.Sd6#
- 1...gxf3
- 2.g4#
- 1...Rf6
- 2.Qxf6#
- 1...Bf7
- 2.Qf6#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Rf7!
- threat
- 1.Qxf8+?
- 1...Bf7
- 2.Qxf7#
- 1...Bxf8+!
- 1...Bf7
- 1.Scd4+?
- Keys
- 1.Rc4!
- threat
- 2.fxg4#
- 1...Rxg8
- 2.Qf6#
- 1...gxf3
- 2.g4#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Qf6#
- 1...Rd4
- 2.Sxe3#
- 1...Bd4
- 2.Sd6#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- threat
- 1.Rc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD,S_CUTB(e)::S(B),XP(b)
- R(i);N_GUARD::QAR1(I),XR(i)
- R(i);S_CUTB(h)::QAB1(I),XP(g)
- R(i);N_GUARD,XB(K)::QAR1(I)
- B(e);N_GUARD,S_CUTR(a)::S(F)
- B(h);N_GUARD,XS(F)::QAB1(I),XP(g)
- B(h);N_GUARD::QAB1(I),XP(g)
- B(h);S_CUTR(i)::QAR1(I)
- S(c);N_GUARD::R1(E)
- S(c);N_GUARD::R1(E),XS(c)
- Tries
- Try
- S(B);CHECK
- Vars
- B(e);XS(B)::S(F)
- Refutation
- R(a);XS(B)
- Try
- S(F);
- Threat
- P(C),XP(d)
- Vars
- R(i);N_GUARD,XB(K)::QAR1(I)
- P(d);OGATE,XP(C)::P(D)
- R(i);S_CUTB(h)::QAB1(I),XP(g)
- B(h);S_CUTR(i)::QAR1(I)
- S(c);N_GUARD::R1(E)
- S(c);N_GUARD::R1(E),XS(c)
- Refutation
- R(a);XS(F)
- Try
- S(F);CHECK
- Vars
- R(a);XS(F)::S(B),XP(b)
- Refutation
- B(e);XS(F)
- Try
- B(K);
- Threat
- P(C),XP(d)
- Vars
- P(d);OGATE,XP(C)::P(D)
- S(c);N_GUARD::R1(E)
- S(c);N_GUARD::R1(E),XS(c)
- Refutation
- R(a);XB(K)
- Try
- B(K);
- Threat
- DUALS(2)
- Vars
- R(i);XB(K)::QAB1(I),XP(g)
- B(h);XB(K)::QAR1(I)
- P(d);XP(C)::QAB1(I),XP(g)
- R(i);::QAR1(I)
- B(e);::QAB1(I),XP(g)
- Refutation
- R(a);
- Try
- R(E);
- Threat
- P(C),XP(d)
- Vars
- R(i);N_GUARD,XB(K)::QAR1(I)
- P(d);OGATE,XP(C)::P(D)
- R(i);S_CUTB(h)::QAB1(I),XP(g)
- B(h);S_CUTR(i)::QAR1(I)
- R(a);N_GUARD,S_CUTB(e)::S(B),XP(b)
- B(e);N_GUARD,S_CUTR(a)::S(F)
- S(c);N_GUARD::R1(E)
- S(c);N_GUARD::R1(E),XS(c)
- Refutation
- B(e);
- Try
- R(E);
- Threat
- P(C),XP(d)
- Vars
- R(i);N_GUARD,XB(K)::QAR1(I)
- P(d);OGATE,XP(C)::P(D)
- R(i);S_CUTB(h)::QAB1(I),XP(g)
- B(h);S_CUTR(i)::QAR1(I)
- R(a);N_GUARD,S_CUTB(e)::S(B),XP(b)
- B(e);N_GUARD,S_CUTR(a)::S(F)
- S(c);N_GUARD::R1(E)
- S(c);N_GUARD::R1(E),XS(c)
- Refutation
- B(e);XR(E)
- Try
- R(E);
- Threat
- P(C),XP(d)
- Vars
- R(a);N_GUARD,XR(E)::S(B),XP(b)
- R(i);N_GUARD,XB(K)::QAR1(I)
- B(e);N_GUARD,XR(E)::S(F)
- P(d);OGATE,XP(C)::P(D)
- R(i);N_GUARD::QAR1(I),XR(i)
- B(h);S_CUTR(i)::QAR1(I)
- S(c);N_GUARD::R1(E)
- S(c);N_GUARD::R1(E),XS(c)
- Refutation
- R(i);
- Try
- Q(I);CHECK,XR(i)
- Vars
- B(h);N_GUARD,P_SPINB(h)::QAR2(I),XB(h)
- Refutation
- B(e);CHECK,XQ(I)
- Try
- Actual
- R(E);
- Threat
- P(C),XP(d)
- Vars
- R(i);N_GUARD,XB(K)::QAR1(I)
- P(d);OGATE,XP(C)::P(D)
- R(i);S_CUTB(h)::QAB1(I),XP(g)
- B(h);S_CUTR(i)::QAR1(I)
- R(a);N_GUARD,S_CUTB(e)::S(B),XP(b)
- B(e);N_GUARD,S_CUTR(a)::S(F)
- S(c);N_GUARD::R1(E)
- S(c);N_GUARD::R1(E),XS(c)
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).