MESON Chess Problem Database
Problem Display
PID: 272443 (2N3K1/2pP1Pn1/2Rrnkpp/4p1p1/1p2PP1B/4Q2B/b4b1N/3q1R2 w - - 0 1)
Rothmann, Bernard
diagrammes, 1977
#2
12 + 13
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Sg4#
- 1...Qb3
- 2.Sg4#
- 1...Qa4
- 2.Sg4#
- 1...Qg4
- 2.Sxg4#
- 1...Qa1
- 2.Sg4#
- 1...Qb1
- 2.Sg4#
- 1...Qc1
- 2.Sg4#
- 1...Qe1
- 2.Sg4#
- 1...Qxf1
- 2.Sg4#
- 1...Qd2
- 2.Sg4#
- 1...Qd3
- 2.Sg4#
- 1...Qd4
- 2.Sg4#
- 1...Qd5
- 2.Sg4#
- 1...Rd2
- 2.f8Q#
- 2.f8R#
- 1...Rd3
- 2.f8Q#
- 2.f8R#
- 1...Rd4
- 2.f8Q#
- 2.f8R#
- 1...Rd5
- 2.f8Q#
- 2.f8R#
- 1...Be1
- 2.fxg5#
- 1...Bg1
- 2.fxg5#
- 1...Bxe3
- 2.fxg5#
- 1...Bg3
- 2.fxg5#
- 1...Bxh4
- 2.fxg5#
- 1...Sd4
- 2.d8Q#
- 2.d8B#
- 1...Sxf4
- 2.d8Q#
- 2.d8B#
- 1...Sc5
- 2.d8Q#
- 2.d8B#
- 1...Sf8
- 2.d8Q#
- 2.d8B#
- 1...Se8
- 2.dxe8S#
- 2.fxe8S#
- 1...exf4
- 2.e5#
- 1...Qc2
- Tries
- 1.Bg3?
- threat
- 2.fxe5#
- 1...Bxg3
- 2.fxg5#
- 1...Sxf4
- 2.d8Q#
- 2.d8B#
- 1...exf4
- 2.e5#
- 1...Qa1
- 2.Sg4#
- 1...Qd4
- 2.Sg4#
- 1...Qd5
- 2.Sg4#
- 1...Rd5
- 2.f8Q#
- 2.f8R#
- 1...gxf4!
- threat
- 1.Bxg5+?
- 1...Sxg5
- 2.d8Q#
- 2.d8B#
- 1...hxg5!
- 1...Sxg5
- 1.Rxd6?
- threat
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qxf1
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qxd6
- 2.Sg4#
- 1...Bxe3
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Bxh4
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...exf4
- 2.e5#
- 1...gxh4
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qc2
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qe2
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qb3
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qf3
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qa4
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qg4
- 2.Sxg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qh5
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qa1
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qb1
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qc1
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qe1
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qd2
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qd3
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qd4
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Qd5
- 2.Sg4#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Bb1
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Bb3
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Bc4
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Bd5
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Be1
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Bg1
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Bg3
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Sh5
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...Se8
- 2.dxe8S#
- 2.d8Q#
- 2.d8B#
- 2.fxe8S#
- 2.f8Q#
- 2.f8R#
- 1...b3
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...h5
- 2.Bxg5#
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...c5
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...c6
- 2.d8Q#
- 2.d8B#
- 2.f8Q#
- 2.f8R#
- 1...cxd6!
- threat
- 1.Qc5?
- threat
- 2.Qxe5#
- 2.fxe5#
- 1...Bxc5
- 2.fxg5#
- 1...Sxf4
- 2.d8Q#
- 2.d8B#
- 1...Sxc5
- 2.d8Q#
- 2.d8B#
- 1...exf4
- 2.e5#
- 1...gxh4
- 2.Qxe5#
- 1...Qa1
- 2.Sg4#
- 1...Qd4
- 2.Sg4#
- 1...Qd5
- 2.Sg4#
- 1...Rd5
- 2.Qe7#
- 2.f8Q#
- 2.f8R#
- 1...Bd4
- 2.fxe5#
- 2.fxg5#
- 1...Bd5!
- threat
- 1.Qc3?
- threat
- 2.Qxe5#
- 2.fxe5#
- 1...Sxf4
- 2.d8Q#
- 2.d8B#
- 1...gxh4
- 2.Qxe5#
- 1...Qa1
- 2.Sg4#
- 2.fxe5#
- 1...Qd4
- 2.Sg4#
- 1...Qd5
- 2.Sg4#
- 1...Rd4
- 2.f8Q#
- 2.f8R#
- 1...Rd5
- 2.f8Q#
- 2.f8R#
- 1...Bd4
- 2.fxg5#
- 1...Sd4
- 2.d8Q#
- 2.d8B#
- 1...bxc3!
- threat
- 1.Qf3?
- threat
- 2.Sg4#
- 2.fxg5#
- 1...Bxh4
- 2.Sg4#
- 1...Sxf4
- 2.d8Q#
- 2.d8B#
- 1...exf4
- 2.Sg4#
- 1...gxh4
- 2.Sg4#
- 1...Sd8
- 2.fxg5#
- 1...Sd4
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 1...Sc5
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 1...Sf8
- 2.fxg5#
- 2.d8Q#
- 2.d8B#
- 1...Sf5
- 2.Sg4#
- 1...h5
- 2.fxg5#
- 1...Qxf3!
- threat
- 1.Qg3?
- threat
- 2.fxe5#
- 1...Bxg3
- 2.fxg5#
- 1...Sxf4
- 2.d8Q#
- 2.d8B#
- 1...Qa1
- 2.Sg4#
- 1...Qd4
- 2.Sg4#
- 1...Qd5
- 2.Sg4#
- 1...Rd5
- 2.f8Q#
- 2.f8R#
- 1...exf4!
- threat
- 1.fxg5+?
- 1...Sxg5
- 2.d8Q#
- 2.d8B#
- 1...hxg5!
- 1...Sxg5
- 1.Bg3?
- Keys
- 1.Qd4!
- threat
- 2.Qxe5#
- 2.fxe5#
- 1...Qxd4
- 2.Sg4#
- 1...Rxd4
- 2.f8Q#
- 2.f8R#
- 1...Bxd4
- 2.fxg5#
- 1...Sxd4
- 2.d8Q#
- 2.d8B#
- 1...Sxf4
- 2.d8Q#
- 2.d8B#
- 1...exd4
- 2.e5#
- 1...gxh4
- 2.Qxe5#
- 1...Qa1
- 2.Sg4#
- 2.fxe5#
- 1...Rd5
- 2.f8Q#
- 2.f8R#
- threat
- 1.Qd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 18
- Sets
- Q(a);N_GUARD::S(B)
- Q(a);N_GUARD::S(B),XQ(a)
- Q(a);N_GUARD,XR(A)::S(B)
- R(g);P_SPINS(h)::P=Q
- B(c);::R(A)+P(F)DCHECK,XP(f)
- B(c);XQ(C)::R(A)+P(F)DCHECK,XP(f)
- B(c);N_SPINP(f),XB(G)::R(A)+P(F)DCHECK,XP(f)
- S(h);N_GUARD,P_PINP(J),P_SPINR(g)::P=Q
- S(h);N_GUARD,P_PINP(J),P_SPINR(g),XP(F)::P=Q
- P(e);OGATE,XP(F)::P(E)
- Tries
- Try
- B(G);N_PINP(f)
- Threat
- P(F),XP(e)
- Vars
- B(c);XB(G)::R(A)+P(F)DCHECK,XP(f)
- S(h);N_GUARD,P_PINP(J),P_SPINR(g),XP(F)::P=Q
- P(e);OGATE,XP(F)::P(E)
- Q(a);N_GUARD::S(B)
- R(g);P_SPINS(h)::P=Q
- Refutation
- P(f);XP(F)
- Try
- B(G);CHECK,XP(f)
- Vars
- S(h);P_PINP(J),P_SPINR(g),XB(G)::P=Q
- Refutation
- P(k);XB(G)
- Try
- R(H);P_PINS(h),XR(g)
- Threat
- DUALS(4)
- Vars
- Q(a);N_GUARD,N_SPINS(h),XR(H)::S(B)
- P(e);OGATE,XP(F)::P(E)
- Refutation
- P(l);N_SPINS(h),XR(H)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(c);XQ(C)::R(A)+P(F)DCHECK,XP(f)
- S(h);N_GUARD,P_PINP(J),P_SPINR(g),XP(F)::P=Q
- S(h);N_GUARD,P_PINP(J),P_SPINR(g),XQ(C)::P=Q
- P(e);OGATE,XP(F)::P(E)
- P(f);N_SPINP(f),XB(G)::QAB1(C),XP(e)
- Q(a);N_GUARD::S(B)
- Refutation
- B(b);
- Try
- Q(C);N_PINP(f),P_PINP(e)
- Threat
- DUALS(2)
- Vars
- S(h);N_GUARD,P_PINP(J),P_SPINR(g),XP(F)::P=Q
- P(f);XB(G)::QAB1(C),XP(e)
- Q(a);N_GUARD,N_SPINP(e),P_SPINP(f)::S(B)
- Q(a);N_GUARD::S(B)
- R(g);N_SPINP(e),P_SPINP(f),P_SPINS(h)::P=Q
- R(g);P_SPINS(h)::P=Q
- B(c);N_SPINP(e),P_SPINP(f)::R(A)+P(F)DCHECK,XP(f)
- S(h);N_GUARD,N_SPINP(e),P_PINP(J),P_SPINP(f),P_SPINR(g)::P=Q
- Refutation
- P(d);N_SPINP(e),P_SPINP(f),XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(c);N_SPINP(f),XB(G)::S(B)
- S(h);N_GUARD,P_PINP(J),P_SPINR(g),P_SPINS(h),XP(F)::P=Q
- P(e);N_SPINP(f),P_SPINP(e),XP(F)::S(B)
- P(f);N_SPINP(f),XB(G)::S(B)
- S(h);P_PINP(J),P_SPINR(g)::QAR(C)+P(F)DCHECK,XP(f)
- S(m);::S(B)
- P(k);::QAR(C)+P(F)DCHECK,XP(f)
- Refutation
- Q(a);XQ(C)
- Try
- Q(C);
- Threat
- P(F),XP(e)
- Vars
- B(c);XQ(C)::R(A)+P(F)DCHECK,XP(f)
- S(h);N_GUARD,P_PINP(J),P_SPINR(g),XP(F)::P=Q
- Q(a);N_GUARD::S(B)
- R(g);P_SPINS(h)::P=Q
- Refutation
- P(e);XP(F)
- Try
- P(F);CHECK,P_PINB(c),XP(f)
- Vars
- S(h);P_PINP(J),P_SPINR(g),P_SPINS(h),XP(F)::P=Q
- Refutation
- P(k);P_SPINP(k),XP(F)
- Try
- Actual
- Q(C);N_PINP(f),P_PINP(e)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,N_SPINP(e),P_SPINP(f),XQ(C)::S(B)
- R(g);N_SPINP(e),P_SPINP(f),P_SPINS(h),XQ(C)::P=Q
- B(c);N_SPINP(e),P_SPINP(f),XQ(C)::R(A)+P(F)DCHECK,XP(f)
- S(h);N_GUARD,N_SPINP(e),P_PINP(J),P_SPINP(f),P_SPINR(g),XQ(C)::P=Q
- S(h);N_GUARD,P_PINP(J),P_SPINR(g),XP(F)::P=Q
- P(e);N_SPINP(e),OGATE,P_SPINP(f),XQ(C)::P(E)
- P(f);XB(G)::QAB1(C),XP(e)
- R(g);P_SPINS(h)::P=Q
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).