MESON Chess Problem Database
Problem Display
PID: 268756 (B3R1br/5pp1/1p1KPp2/3PN1p1/nR1Pk1P1/3pP3/5BP1/1n5Q w - - 0 1)
Coello Alonso, Jose Antonio
Doukhan, Gerard
Problemas, 2020
#2
13 + 11
SOLUTION
- SOUND
- Sets
- 1...Rh3
- 2.gxh3#
- 1...Bh7
- 2.g3#
- 1...Sc5
- 2.dxc5#
- 1...d2
- 2.Qxb1#
- 1...fxe5
- 2.dxe5#
- 1...fxe6
- 2.dxe6#
- 1...Rh3
- Tries
- 1.Sf3?
- threat
- 2.exf7#
- 1...fxe6
- 2.dxe6#
- 1...d2
- 2.Qxb1#
- 1...Sc5
- 2.dxc5#
- 1...Bh7!
- threat
- 1.Sc4?
- threat
- 2.exf7#
- 1...fxe6
- 2.dxe6#
- 1...d2
- 2.Qxb1#
- 1...Bh7
- 2.g3#
- 1...Sc5!
- threat
- 1.Sc6?
- threat
- 2.exf7#
- 1...d2
- 2.Qxb1#
- 1...Bh7
- 2.g3#
- 1...Sc5
- 2.dxc5#
- 1...fxe6!
- threat
- 1.Sg6?
- threat
- 2.exf7#
- 1...fxe6
- 2.dxe6#
- 1...d2
- 2.Qxb1#
- 1...Bh7
- 2.g3#
- 1...Sc5
- 2.dxc5#
- 1...fxg6!
- threat
- 1.Qxb1?
- threat
- 2.Qxd3#
- 1...fxe5
- 2.dxe5#
- 1...Sc5
- 2.dxc5#
- 1...Sb2!
- threat
- 1.Qd1?
- threat
- 2.Qf3#
- 2.Qxd3#
- 1...fxe5
- 2.Qf3#
- 2.dxe5#
- 1...Rh3
- 2.Qxd3#
- 1...Sb2
- 2.Qf3#
- 1...Sc5
- 2.Qf3#
- 2.dxc5#
- 1...d2
- 2.Qc2#
- 2.Qf3#
- 2.Qxb1#
- 1...Sd2!
- threat
- 1.Qf1?
- threat
- 2.Qxd3#
- 1...fxe5
- 2.dxe5#
- 1...Sc5
- 2.dxc5#
- 1...d2
- 2.Qd3#
- 2.Qxb1#
- 1...Sb2!
- threat
- 1.exf7?
- threat
- 2.Sf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 1...fxe5
- 2.Rxe5#
- 2.dxe5#
- 1...Bh7
- 2.g3#
- 1...Sc5
- 2.dxc5#
- 1...d2
- 2.Qxb1#
- 1...g6
- 2.Sf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sxg6#
- 2.Sd7#
- 1...Bxf7!
- threat
- 1.Sf3?
- Keys
- 1.Sd7!
- threat
- 2.exf7#
- 1...fxe6
- 2.dxe6#
- 1...d2
- 2.Qxb1#
- 1...Bh7
- 2.g3#
- 1...Sc5
- 2.dxc5#
- threat
- 1.Sd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(k);OGATE::QAB(A)+P(C),XR(k)
- B(j);S_CUTR(k)::QAB(A)+P(C)
- S(c);OGATE::R(E)+P(F),XS(c)
- P(b);OGATEB::QAB(A),XS(a)
- P(g);OGATE,XS(I)::R(E)+P(F),XP(g)
- P(h);OGATE,XP(K)::B(L)+P(H),XP(h)
- Tries
- Try
- S(I);
- Threat
- R(M)+P(K),XP(h)
- Vars
- P(h);OGATE,P_SPINP(h),XP(K)::B(L)+P(H),XP(h)
- P(b);OGATEB::QAB(A),XS(a)
- S(c);OGATE::R(E)+P(F),XS(c)
- Refutation
- B(j);
- Try
- S(I);
- Threat
- R(M)+P(K),XP(h)
- Vars
- P(h);OGATE,P_SPINP(h),XP(K)::B(L)+P(H),XP(h)
- P(b);OGATEB::QAB(A),XS(a)
- B(j);S_CUTR(k)::QAB(A)+P(C)
- Refutation
- S(c);
- Try
- S(I);
- Threat
- R(M)+P(K),XP(h)
- Vars
- P(b);OGATEB::QAB(A),XS(a)
- B(j);S_CUTR(k)::QAB(A)+P(C)
- S(c);OGATE::R(E)+P(F),XS(c)
- Refutation
- P(h);P_SPINP(h),XP(K)
- Try
- S(I);
- Threat
- R(M)+P(K),XP(h)
- Vars
- P(h);OGATE,P_SPINP(h),XP(K)::B(L)+P(H),XP(h)
- P(b);OGATEB::QAB(A),XS(a)
- B(j);S_CUTR(k)::QAB(A)+P(C)
- S(c);OGATE::R(E)+P(F),XS(c)
- Refutation
- P(h);XS(I)
- Try
- Q(A);P_PINP(b),XS(a)
- Threat
- QAB1(A),XP(b)
- Vars
- P(g);OGATE,XS(I)::R(E)+P(F),XP(g)
- S(c);OGATE::R(E)+P(F),XS(c)
- Refutation
- S(c);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(k);::QAB1(A),XP(b)
- S(c);::QAB1(A)
- Refutation
- S(a);
- Try
- Q(A);
- Threat
- QAB1(A),XP(b)
- Vars
- P(g);OGATE,XS(I)::R(E)+P(F),XP(g)
- S(c);OGATE::R(E)+P(F),XS(c)
- Refutation
- S(c);
- Try
- P(K);XP(h)
- Threat
- DUALS(5)
- Vars
- B(j);S_CUTR(k)::QAB(A)+P(C)
- S(c);OGATE::R(E)+P(F),XS(c)
- P(b);OGATEB::QAB(A),XS(a)
- Refutation
- B(j);XP(K)
- Try
- Actual
- S(I);
- Threat
- R(M)+P(K),XP(h)
- Vars
- P(h);OGATE,P_SPINP(h),XP(K)::B(L)+P(H),XP(h)
- P(b);OGATEB::QAB(A),XS(a)
- B(j);S_CUTR(k)::QAB(A)+P(C)
- S(c);OGATE::R(E)+P(F),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).