MESON Chess Problem Database
Problem Display
PID: 244975 (2b1RRr1/8/1p4p1/2Qpb1K1/2nNkPN1/1PPr4/1n2P3/1B6 w - - 0 1)
Doukhan, Gerard
Loustau, Jean-Marc
The Problemist, 2020
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Bxd3#
- 2.exd3#
- 1...Sa4
- 2.Bxd3#
- 2.exd3#
- 1...Sd2
- 2.Rxe5#
- 1...Sa3
- 2.Rxe5#
- 1...Se3
- 2.Sf2#
- 2.Sf6#
- 2.Rxe5#
- 1...Sa5
- 2.Rxe5#
- 1...Sd6
- 2.Rxe5#
- 1...Sd1
- Tries
- 1.Sc2?
- threat
- 2.Sf2#
- 2.Sf6#
- 1...Rxf8
- 2.Sf2#
- 1...Rf3
- 2.Sf6#
- 2.Qd4#
- 1...Rg3
- 2.Qd4#
- 1...Be6
- 2.Sf2#
- 1...Sd1
- 2.Sf6#
- 1...Bxg4!
- threat
- 1.Sf3?
- threat
- 2.Sf2#
- 2.Sf6#
- 2.Qd4#
- 1...Rxf8
- 2.Sf2#
- 2.Qd4#
- 1...Bxg4
- 2.Qd4#
- 1...Be6
- 2.Sf2#
- 1...Sd1
- 2.Sf6#
- 2.Bxd3#
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 2.Qc6#
- 1...bxc5!
- threat
- 1.Sb5?
- threat
- 2.Sf2#
- 2.Sf6#
- 2.Qd4#
- 1...Rxf8
- 2.Sf2#
- 2.Qd4#
- 1...Bxg4
- 2.Qd4#
- 1...Be6
- 2.Sf2#
- 1...Sd1
- 2.Sf6#
- 2.Bxd3#
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 2.Qc6#
- 1...bxc5!
- threat
- 1.Sf5?
- threat
- 2.Sf2#
- 2.Sf6#
- 2.Sg3#
- 2.Qd4#
- 1...Rxf8
- 2.Sf2#
- 2.Sg3#
- 2.Qd4#
- 1...Bxf5
- 2.Sf2#
- 2.Sf6#
- 2.Qd4#
- 1...bxc5
- 2.Sf2#
- 2.Sf6#
- 2.Sg3#
- 1...Be6
- 2.Sf2#
- 2.Sg3#
- 1...Sd1
- 2.Sf6#
- 2.Sg3#
- 2.Bxd3#
- 2.Qd4#
- 1...d4
- 2.Sf2#
- 2.Sf6#
- 2.Sg3#
- 2.Qxd4#
- 2.Qc6#
- 1...gxf5+!
- threat
- 1.Sc6?
- threat
- 2.Sf2#
- 2.Sf6#
- 2.Qd4#
- 1...Rxf8
- 2.Sf2#
- 2.Qd4#
- 1...Bxg4
- 2.Qd4#
- 1...Be6
- 2.Sf2#
- 1...Sd1
- 2.Sf6#
- 2.Bxd3#
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 1...bxc5!
- threat
- 1.Qxc4?
- threat
- 2.Rxe5#
- 1...Sxc4
- 2.Bxd3#
- 2.exd3#
- 1...Be6!
- threat
- 1.bxc4?
- threat
- 2.Rxe5#
- 2.Qxd5#
- 1...Bxg4
- 2.Rxe5#
- 1...Sxc4
- 2.Bxd3#
- 2.exd3#
- 1...dxc4
- 2.Rxe5#
- 2.Qxe5#
- 2.Qc6#
- 1...bxc5
- 2.Rxe5#
- 1...Bb7
- 2.Rxe5#
- 1...Be6!
- threat
- 1.Sc2?
- Keys
- 1.Se6!
- threat
- 2.Sf2#
- 1...Bxf4+
- 2.Rxf4#
- 1...Bf6+
- 2.Sxf6#
- 1...bxc5
- 2.Sxc5#
- 1...Bd4
- 2.Qxd4#
- 1...Sd1
- 2.Bxd3#
- 1...d4
- 2.Qc6#
- threat
- 1.Se6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 4
- Sets
- S(c);N_GUARD::R1(J),XB(f)
- Tries
- Try
- S(E);N_PINR(b)
- Threat
- DUALS(2)
- Vars
- R(j);XR(K)::S(G)
- R(b);N_GUARD,P_PINS(G)::QAR1(H)
- B(i);N_SPINB(f)::S(G)
- S(a);::S(G)
- Refutation
- B(i);XS(G)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(i);XS(G)::QAR1(H)
- B(i);N_SPINB(f)::S(G)
- Refutation
- P(g);XQ(H)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(i);XS(G)::QAR1(H)
- B(i);N_SPINB(f)::S(G)
- Refutation
- P(g);XQ(H)
- Try
- S(E);
- Threat
- DUALS(4)
- Refutation
- P(h);CHECK,XS(E)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(i);XS(G)::QAR1(H)
- B(i);N_SPINB(f)::S(G)
- P(e);::QAR1(H),XP(e)
- Refutation
- P(g);XQ(H)
- Try
- Q(H);XS(c)
- Threat
- R1(J),XB(f)
- Refutation
- B(i);N_SPINB(f)
- Try
- P(C);XS(c)
- Threat
- DUALS(2)
- Vars
- B(i);XS(G)::R1(J),XB(f)
- P(g);XQ(H)::R1(J),XB(f)
- B(i);::R1(J),XB(f)
- Refutation
- B(i);N_SPINB(f)
- Try
- Actual
- S(E);N_PINB(f)
- Threat
- S(G)
- Vars
- B(f);CHECK,OGATE,XP(F)::R1(K),XB(f)
- B(f);CHECK,N_GUARD::S(G),XB(f)
- P(g);XQ(H)::S(E),XP(g)
- B(f);N_GUARD::QAR1(H),XB(f)
- S(a);N_GUARD::B(A),XR(b)
- P(e);OGATEB::QAB(H)
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).