MESON Chess Problem Database
Problem Display
PID: 151937 (2b2qr1/1P4PP/2P1kbP1/2pNPpB1/K4Q1p/5N2/B5P1/3R4 w - - 0 1)
Rosner, Eugene David
Die Schwalbe, 2014
#2
14 + 8
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qe7
- 2.Sc7#
- 1...Bxe5
- 2.Sc7#
- 2.Qxe5#
- 1...Bxg5
- 2.Sxg5#
- 1...Be7
- 2.Sc7#
- 1...Bxg7
- 2.Sc7#
- 1...Bd8
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 1...Qd6
- Tries
- 1.Sxh4?
- threat
- 2.Qxf5#
- 1...Bxe5
- 2.Sc7#
- 1...Bxg7
- 2.Sc7#
- 1...Be7
- 2.Sc7#
- 1...Bd8
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 1...Bxg5!
- threat
- 1.Re1?
- threat
- 2.exf6#
- 1...Bxe5
- 2.Qxe5#
- 1...Bxg5
- 2.Sxg5#
- 1...Bxg7
- 2.Sc7#
- 1...Qd6
- 2.hxg8Q#
- 2.hxg8B#
- 1...Be7
- 2.Sc7#
- 1...Bd8
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 1...c4!
- threat
- 1.g4?
- threat
- 2.Qxf5#
- 2.gxf5#
- 1...Bxe5
- 2.Sc7#
- 2.Qxe5#
- 1...Bxg5
- 2.Sxg5#
- 1...Bxg7
- 2.Sc7#
- 1...fxg4
- 2.Qxg4#
- 1...Be7
- 2.Sc7#
- 1...Bd8
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 1...hxg4 ep!
- threat
- 1.exf6?
- threat
- 2.Sc7#
- 2.Re1#
- 2.Qe5#
- 1...c4
- 2.Sc7#
- 2.Qe5#
- 1...Qd6
- 2.Sc7#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qxf6!
- threat
- 1.gxf8Q?
- threat
- 2.Sc7#
- 2.Qd6#
- 2.Qxf6#
- 2.Qf7#
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rxg6
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 1...Bxg5
- 2.Sxg5#
- 2.Sc7#
- 2.Qd6#
- 2.Q4xf5#
- 2.Q8xf5#
- 2.Qf7#
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...c4
- 2.Sc7#
- 2.Qd6#
- 2.Qxf6#
- 2.Qf7#
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg7
- 2.Sc7#
- 2.Qd6#
- 2.Qxf6#
- 1...Rh8
- 2.Sc7#
- 2.Qd6#
- 2.Qxf6#
- 2.Qf7#
- 2.bxc8Q#
- 2.bxc8B#
- 1...Be7
- 2.Sc7#
- 2.Qxe7#
- 2.Q4xf5#
- 2.Q8xf5#
- 2.Qf7#
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg7
- 2.Sc7#
- 2.Qd6#
- 2.Qe7#
- 2.Q4xf5#
- 2.Q8xf5#
- 2.Qf7#
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bd8
- 2.Sc7#
- 2.Qd6#
- 2.Q4xf5#
- 2.Q8xf5#
- 2.Qf7#
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bh8
- 2.Sc7#
- 2.Qd6#
- 2.Qe7#
- 2.Q4xf5#
- 2.Q8xf5#
- 2.Qf7#
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...h3
- 2.Sc7#
- 2.Qd6#
- 2.Qxf6#
- 2.Qf7#
- 2.Qxg8#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rxf8!
- threat
- 1.gxf8B?
- threat
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rxg6
- 2.Sc7#
- 1...Bxe5
- 2.Sc7#
- 2.Qxe5#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bxg5
- 2.Sxg5#
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...c4
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg7
- 2.Sc7#
- 1...Be7
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg7
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bd8
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bh8
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...h3
- 2.Sc7#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rxf8!
- threat
- 1.gxf8R?
- threat
- 2.Rxf6#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rxg6
- 2.bxc8Q#
- 2.bxc8B#
- 1...Bxe5
- 2.Sc7#
- 2.Qxe5#
- 1...Bxg5
- 2.Sxg5#
- 2.Qxf5#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...c4
- 2.Rxf6#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg7
- 2.Rxf6#
- 1...Be7
- 2.Sc7#
- 2.Qxf5#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg7
- 2.Sc7#
- 2.Qxf5#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bd8
- 2.Sc7#
- 2.Qxf5#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bh8
- 2.Sc7#
- 2.Qxf5#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...h3
- 2.Rxf6#
- 2.bxc8Q#
- 2.bxc8B#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rxf8!
- threat
- 1.hxg8Q+?
- 1...Qf7
- 2.Qxf7#
- 2.bxc8Q#
- 2.bxc8B#
- 1...Qxg8!
- 1...Qf7
- 1.hxg8S?
- threat
- 2.Sc7#
- 2.gxf8S#
- 1...Qxg7
- 2.Sc7#
- 1...Bxe5
- 2.Sc7#
- 2.Qxe5#
- 1...Bxg7
- 2.Sc7#
- 1...Qd6
- 2.Sc7#
- 1...Qe7
- 2.Sc7#
- 1...Qf7
- 2.Sc7#
- 1...Qd8
- 2.Sc7#
- 1...Qe8
- 2.Sc7#
- 1...Be7
- 2.Sc7#
- 1...Qxg8!
- threat
- 1.hxg8B+?
- 1...Qf7
- 2.Bxf7#
- 2.bxc8Q#
- 2.bxc8B#
- 1...Qxg8!
- 1...Qf7
- 1.Sxh4?
- Keys
- 1.Bb1!
- threat
- 2.Bxf5#
- 2.Qxf5#
- 1...Bxe5
- 2.Qxe5#
- 1...Bxg5
- 2.Sxg5#
- 1...Bxg7
- 2.Sc7#
- 1...Be7
- 2.Sc7#
- 1...Bd8
- 2.bxc8Q#
- 2.bxc8B#
- threat
- 1.Bb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(g);N_GUARD::PXR(h)=Q
- Q(g);SBLOCK::B(B)+S(G),DCHECK
- B(e);XB(I)::S(D),XB(e)
- B(e);::B(B)+S(G),DCHECK
- B(e);XP(M)::B(B)+S(G),DCHECK
- Tries
- Try
- S(D);XP(a)
- Threat
- QAB1(F),XP(c)
- Vars
- B(e);XP(H)::B(B)+S(G),DCHECK
- B(e);XP(M)::B(B)+S(G),DCHECK
- B(e);::B(B)+S(G),DCHECK
- Refutation
- B(e);XB(I)
- Try
- R(A);
- Threat
- R(A)+P(H),XB(e)
- Vars
- B(e);OGATE,P_SPINB(e),XP(H)::QAR1(F),XB(e)
- B(e);XB(I)::S(D),XB(e)
- B(e);XP(M)::B(B)+S(G),DCHECK
- Q(g);N_GUARD::PXR(h)=Q
- B(e);::B(B)+S(G),DCHECK
- Refutation
- P(b);
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- B(e);XB(I)::S(D),XB(e)
- B(e);XP(M)::B(B)+S(G),DCHECK
- P(c);OGATE,XP(C)::QAB(F),XP(c)
- B(e);::B(B)+S(G),DCHECK
- Refutation
- P(a);EP,XP(C)
- Try
- P(H);XB(e)
- Threat
- DUALS(3)
- Refutation
- Q(g);XP(H)
- Try
- P(M);XQ(g)
- Threat
- DUALS(9)
- Refutation
- R(h);XQ(M)
- Try
- P(M);XQ(g)
- Threat
- DUALS(5)
- Vars
- R(h);XP(K)::B(B)+S(G),DCHECK
- R(h);::B(B)+S(G),DCHECK
- Refutation
- R(h);XB(M)
- Try
- P(M);XQ(g)
- Threat
- DUALS(5)
- Vars
- R(h);XP(K)::PXB(f)=Q
- R(h);::R1(M),XB(e)
- Refutation
- R(h);XR(M)
- Try
- P(N);CHECK,XR(h)
- Refutation
- Q(g);XQ(N)
- Try
- P(N);XR(h)
- Threat
- DUALS(2)
- Vars
- Q(g);XP(M)::B(B)+S(G),DCHECK
- B(e);XP(M)::B(B)+S(G),DCHECK
- Q(g);::B(B)+S(G),DCHECK
- Q(g);P_PINP(J)::B(B)+S(G),DCHECK
- B(e);::B(B)+S(G),DCHECK
- Refutation
- Q(g);XS(N)
- Try
- P(N);CHECK,XR(h)
- Refutation
- Q(g);XB(N)
- Try
- Actual
- B(B);
- Threat
- DUALS(2)
- Vars
- B(e);OGATE,XP(H)::QAR1(F),XB(e)
- B(e);XB(I)::S(D),XB(e)
- B(e);XP(M)::S(G)
- B(e);::S(G)
- B(e);S_CUTQ(g)::PXB(f)=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).