MESON Chess Problem Database
Problem Display
PID: 65415 (3b1K2/r1p1PPp1/p1b3Bp/5p2/RB1q3k/7p/5N1N/2Q3R1 w - - 0 1)
Carrez, Jean-Pierre
1st Prize, diagrammes 02. TT, 1974
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Qf4#
- 1...Qb2
- 2.Qf4#
- 1...Qxf2
- 2.exd8Q#
- 2.exd8B#
- 1...Qc3
- 2.Qf4#
- 1...Qc5
- 2.Qf4#
- 1...Qb6
- 2.Qf4#
- 2.exd8Q#
- 2.exd8B#
- 1...Qf6
- 2.Qf4#
- 1...Qd3
- 2.Qf4#
- 1...Qc4
- 2.exd8Q#
- 2.exd8B#
- 1...Qf4
- 2.Qxf4#
- 1...Qd5
- 2.Qf4#
- 1...Qd7
- 2.Qf4#
- 1...Bf3
- 2.Sxf3#
- 1...Bxa4
- 2.Sf3#
- 1...Be4
- 2.Qf4#
- 1...Bb5
- 2.Sf3#
- 1...Bd7
- 2.Sf3#
- 1...Be8
- 2.Sf3#
- 1...Bxe7+
- 2.Bxe7#
- 1...f4
- 2.Rg4#
- 1...h5
- 2.Qg5#
- 1...Qa1
- Tries
- 1.Sh1?
- threat
- 2.Be1#
- 1...Bxe7+
- 2.Bxe7#
- 1...Qxb4
- 2.Qe1#
- 1...Bxa4
- 2.Sf3#
- 1...Qf2
- 2.exd8Q#
- 2.exd8B#
- 1...Qc3
- 2.Qf4#
- 1...Be4
- 2.Qf4#
- 1...f4
- 2.Rg4#
- 1...Qd2!
- threat
- 1.Be1?
- threat
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.exd8Q#
- 2.exd8B#
- 1...Qxa4
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Se4#
- 2.Sfg4#
- 2.exd8Q#
- 2.exd8B#
- 1...Bxa4
- 2.Sf3#
- 1...Bg2
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 1...Qb4
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 1...Qc4
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Se4#
- 2.Sfg4#
- 2.exd8Q#
- 2.exd8B#
- 1...Qe4
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Sxe4#
- 2.Sf3#
- 2.exd8Q#
- 2.exd8B#
- 1...Qf4
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Rxf4#
- 2.Qxf4#
- 2.exd8Q#
- 2.exd8B#
- 1...Qg4
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Sfxg4#
- 2.exd8Q#
- 2.exd8B#
- 1...Rb7
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.exd8Q#
- 2.exd8B#
- 1...Ra8
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 1...Bh1
- 2.Sd1#
- 2.Sxh1#
- 2.Sd3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bf3
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Sxf3#
- 2.exd8Q#
- 2.exd8B#
- 1...Be4
- 2.Qf4#
- 1...Bb5
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Sf3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bd5
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bb7
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bd7
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Sf3#
- 2.exd8Q#
- 2.exd8B#
- 1...Ba8
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.exd8Q#
- 2.exd8B#
- 1...Be8
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Sf3#
- 2.exd8Q#
- 2.exd8B#
- 1...f4
- 2.Rg4#
- 1...a5
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.exd8Q#
- 2.exd8B#
- 1...h5
- 2.Sd1#
- 2.Sh1#
- 2.Sd3#
- 2.Qg5#
- 2.exd8Q#
- 2.exd8B#
- 1...Bxe7+!
- threat
- 1.Bd6?
- threat
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bxe7+
- 2.Bxe7#
- 1...Qxa4
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bxa4
- 2.Sf3#
- 2.Bg3#
- 1...Qb4
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Qc4
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Qe4
- 2.Sf3#
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Qf4
- 2.Rxf4#
- 2.Qxf4#
- 2.exd8Q#
- 2.exd8B#
- 1...Qg4
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Rb7
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Ra8
- 2.Bg3#
- 1...Bh1
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bg2
- 2.exd8Q#
- 2.exd8B#
- 1...Bf3
- 2.Sxf3#
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Be4
- 2.Bg3#
- 2.Qf4#
- 1...Bb5
- 2.Sf3#
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bd5
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bb7
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Bd7
- 2.Sf3#
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Ba8
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...Be8
- 2.Sf3#
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...f4
- 2.Rg4#
- 1...a5
- 2.Bg3#
- 2.exd8Q#
- 2.exd8B#
- 1...h5
- 2.Bg3#
- 2.Qg5#
- 2.exd8Q#
- 2.exd8B#
- 1...cxd6!
- threat
- 1.exd8Q+?
- 1...Qf6
- 2.Qf4#
- 1...Qxd8+!
- 1...Qf6
- 1.exd8B+?
- 1...Qf6
- 2.Qf4#
- 1...Qxd8+!
- 1...Qf6
- 1.Sh1?
- Keys
- 1.Sd3!
- threat
- 2.Be1#
- 1...Bxe7+
- 2.Bxe7#
- 1...Qxb4
- 2.Qe1#
- 1...Bxa4
- 2.Sf3#
- 1...Qf2
- 2.exd8Q#
- 2.exd8B#
- 1...Qc3
- 2.Qf4#
- 1...Be4
- 2.Qf4#
- 1...f4
- 2.Rg4#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(b);N_GUARD::QAR2(A)
- Q(b);N_GUARD,XS(C)::PXB(k)=Q
- Q(b);N_GUARD,P_PINP(H)::QAR2(A)
- Q(b);N_GUARD,P_PINP(I)::QAR2(A)
- Q(b);N_GUARD::PXB(k)=Q
- Q(b);N_GUARD::QAR2(A),XQ(b)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD,SBLOCK,XR(E)::S(D)
- B(f);S_CUTQ(b)::QAR2(A)
- B(f);N_GUARD::S(D)
- B(k);CHECK,OGATE,XP(H)::B(F),XB(k)
- P(d);N_GUARD,S_CUTQ(b)::R1(B)
- P(g);N_GUARD::QAB1(A)
- Tries
- Try
- S(C);
- Threat
- B(F)
- Vars
- B(k);CHECK,OGATE,XP(H)::B(F),XB(k)
- Q(b);N_GUARD,P_PINP(H),P_SPINQ(b),XB(F)::QAB(A)
- B(f);N_GUARD,SBLOCK,XR(E)::S(D)
- Q(b);N_GUARD::PXB(k)=Q
- Q(b);N_GUARD::QAR2(A)
- B(f);S_CUTQ(b)::QAR2(A)
- P(d);N_GUARD,S_CUTQ(b)::R1(B)
- Refutation
- Q(b);
- Try
- B(F);P_PINQ(b)
- Threat
- DUALS(5)
- Vars
- B(f);N_GUARD,N_SPINQ(b),SBLOCK,XR(E)::S(D)
- B(f);N_SPINQ(b),S_CUTQ(b)::QAR2(A)
- P(d);N_GUARD,N_SPINQ(b),S_CUTQ(b)::R1(B)
- Refutation
- B(k);CHECK,XP(H)
- Try
- B(F);P_PINQ(b)
- Threat
- DUALS(3)
- Vars
- B(k);CHECK,OGATE,XP(H)::B(F),XB(k)
- R(h);::B(F)
- B(f);::PXB(k)=Q
- P(d);N_GUARD,N_SPINQ(b),S_CUTQ(b)::R1(B)
- Refutation
- P(i);XB(F)
- Try
- P(H);CHECK,XB(k)
- Vars
- Q(b);P_PINP(I),P_SPINQ(b)::QAR2(A)
- Refutation
- Q(b);CHECK,XQ(H)
- Try
- P(H);CHECK,XB(k)
- Vars
- Q(b);P_PINP(I),P_SPINQ(b)::QAR2(A)
- Refutation
- Q(b);CHECK,XB(H)
- Try
- Actual
- S(C);
- Threat
- B(F)
- Vars
- B(k);CHECK,OGATE,XP(H)::B(F),XB(k)
- Q(b);N_GUARD,P_PINP(H),P_SPINQ(b),XB(F)::QAB(A)
- B(f);N_GUARD,SBLOCK,XR(E)::S(D)
- Q(b);N_GUARD::PXB(k)=Q
- Q(b);N_GUARD::QAR2(A)
- B(f);S_CUTQ(b)::QAR2(A)
- P(d);N_GUARD,S_CUTQ(b)::R1(B)
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).