MESON Chess Problem Database
Problem Display
PID: 242938 (3N4/Np2p3/RB1bPpQ1/P1p1kr2/2P2p1R/K2nPP2/8/1B6 w - - 0 1)
Gvozdjak, Peter
Schweizerische Schachzeitung, 1991
#2
13 + 9
SOLUTION
- SOUND
- Sets
- 1...Rg5
- 2.Qe4#
- 1...Rh5
- 2.Qe4#
- 1...Bc7
- 2.Bxc7#
- 1...Sc1
- 2.Qxf5#
- 1...Se1
- 2.Qxf5#
- 1...Sb2
- 2.Qxf5#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Qxf5#
- 1...fxe3
- 2.Re4#
- 1...bxa6
- 2.Sac6#
- 1...Rg5
- Tries
- 1.Bc2?
- 1...fxe3
- 2.Re4#
- 1...bxa6
- 2.Sac6#
- 1...Bc7
- 2.Bxc7#
- 1...Rg5
- 2.Qe4#
- 1...Rh5
- 2.Qe4#
- 1...Sc1
- 2.Qxf5#
- 1...Se1
- 2.Qxf5#
- 1...Sb2
- 2.Qxf5#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Qxf5#
- 1...Bb8!
- 1...fxe3
- 1.Bxd3?
- threat
- 2.Qxf5#
- 1...Bc7
- 2.Bxc7#
- 1...Rg5
- 2.Qe4#
- 1...Rh5
- 2.Qe4#
- 1...Bb8!
- threat
- 1.Bxc5?
- 1...Sxc5
- 2.Qxf5#
- 1...fxe3
- 2.Re4#
- 1...bxa6
- 2.Sac6#
- 1...Bb8
- 2.Sf7#
- 2.Bd4#
- 1...Rg5
- 2.Qe4#
- 1...Rh5
- 2.Qe4#
- 1...Bc7
- 2.Sf7#
- 2.Bd4#
- 1...Sc1
- 2.Qxf5#
- 1...Se1
- 2.Qxf5#
- 1...Sb2
- 2.Qxf5#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Bd4#
- 2.Qxf5#
- 1...b5
- 2.Sac6#
- 1...b6
- 2.Sac6#
- 1...Bxc5+!
- 1...Sxc5
- 1.Rg4?
- 1...fxe3
- 2.Re4#
- 1...bxa6
- 2.Sac6#
- 1...Bc7
- 2.Bxc7#
- 1...Rg5
- 2.Qe4#
- 1...Rh5
- 2.Qe4#
- 1...Sc1
- 2.Qxf5#
- 1...Se1
- 2.Qxf5#
- 1...Sb2
- 2.Qxf5#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Qxf5#
- 1...Bb8!
- 1...fxe3
- 1.Qh7?
- 1...fxe3
- 2.Re4#
- 1...bxa6
- 2.Sac6#
- 1...Bc7
- 2.Bxc7#
- 1...Rg5
- 2.Qe4#
- 1...Rh5
- 2.Qe4#
- 1...Sc1
- 2.Qxf5#
- 1...Se1
- 2.Qxf5#
- 1...Sb2
- 2.Qxf5#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Qxf5#
- 1...Bb8!
- 1...fxe3
- 1.Qg4?
- 1...fxe3
- 2.Qe4#
- 1...bxa6
- 2.Sac6#
- 1...Bc7
- 2.Bxc7#
- 1...Rg5
- 2.Sf7#
- 1...Rh5
- 2.Sf7#
- 1...Sc1
- 2.Qxf5#
- 1...Se1
- 2.Qxf5#
- 1...Sb2
- 2.Qxf5#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Qxf5#
- 1...Bb8!
- 1...fxe3
- 1.Bc2?
- Keys
- 1.Bc7!
- 1...Bxc7
- 2.Sf7#
- 1...fxe3
- 2.Re4#
- 1...bxa6
- 2.Sac6#
- 1...Rg5
- 2.Qe4#
- 1...Rh5
- 2.Qe4#
- 1...Sc1
- 2.Qxf5#
- 1...Se1
- 2.Qxf5#
- 1...Sb2
- 2.Qxf5#
- 1...Sf2
- 2.Qxf5#
- 1...Sb4
- 2.Qxf5#
- 1...b5
- 2.Sac6#
- 1...b6
- 2.Sac6#
- 1...Bxc7
- 1.Bc7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(e);OGATE::QAR1(K)
- B(f);OGATEB::B(I),XB(f)
- S(a);::QAR1(K),XR(e)
- P(b);OGATE,XP(C)::R1(F)
- P(h);N_GUARD,XR(H)::S(L)
- Tries
- Try
- B(A);
- Vars
- P(b);OGATE,XP(C)::R1(F)
- P(h);N_GUARD,XR(H)::S(L)
- B(f);OGATEB::B(I),XB(f)
- R(e);OGATE::QAR1(K)
- S(a);::QAR1(K),XR(e)
- Refutation
- B(f);
- Try
- B(A);XS(a)
- Threat
- QAR1(K),XR(e)
- Vars
- B(f);OGATEB::B(I),XB(f)
- R(e);OGATE::QAR1(K)
- Refutation
- B(f);
- Try
- B(I);P_SPINB(I),XP(c)
- Vars
- S(a);XB(I)::QAR1(K),XR(e)
- P(b);OGATE,XP(C)::R1(F)
- P(h);N_GUARD,XR(H)::S(L)
- R(e);OGATE::QAR1(K)
- S(a);::QAR1(K),XR(e)
- P(h);N_GUARD::S(L)
- Refutation
- B(f);CHECK,XB(I)
- Try
- R(F);
- Vars
- P(b);OGATE,XP(C)::R1(F)
- P(h);N_GUARD,XR(H)::S(L)
- B(f);OGATEB::B(I),XB(f)
- R(e);OGATE::QAR1(K)
- S(a);::QAR1(K),XR(e)
- Refutation
- B(f);
- Try
- Q(K);
- Vars
- P(b);OGATE,XP(C)::R1(F)
- P(h);N_GUARD,XR(H)::S(L)
- B(f);OGATEB::B(I),XB(f)
- R(e);OGATE::QAR1(K)
- S(a);::QAR1(K),XR(e)
- Refutation
- B(f);
- Try
- Q(K);
- Vars
- P(b);OGATE,XP(C)::QAR1(K)
- P(h);N_GUARD,XR(H)::S(L)
- B(f);OGATEB::B(I),XB(f)
- R(e);::S(M)
- S(a);::QAR1(K),XR(e)
- Refutation
- B(f);
- Try
- Actual
- B(I);P_PINB(f)
- Vars
- B(f);N_SPINB(f),XB(I)::S(M)
- P(b);OGATE,XP(C)::R1(F)
- P(h);N_GUARD,XR(H)::S(L)
- R(e);OGATE::QAR1(K)
- S(a);::QAR1(K),XR(e)
- P(h);N_GUARD::S(L)
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).