MESON Chess Problem Database
Problem Display
PID: 147125 (Nr1k4/1P3Kp1/1P3PP1/N2n4/1n1B1pB1/2p1bP1p/2P3PR/4RQ2 w - - 0 1)
Saunders, Denis M
Australian Chess Problem Magazine, 1997
#2
15 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxb7+
- 2.Sxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8R#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bc1
- 2.Re8#
- 1...Bg1
- 2.Re8#
- 1...Bd2
- 2.Re8#
- 1...Bf2
- 2.Re8#
- 1...Bxd4
- 2.Re8#
- 1...Sa2
- 2.Sc6#
- 1...Sxc2
- 2.Sc6#
- 1...Sd3
- 2.Sc6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc7
- 2.bxc7#
- 1...Se7
- 2.fxe7#
- 1...hxg2
- 2.Rh8#
- 1...Rxb7+
- Tries
- 1.Bc5?
- 1...Rxb7+
- 2.Sxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8R#
- 1...Bxc5
- 2.Re8#
- 1...Sxc2
- 2.Sc6#
- 1...Sxb6
- 2.Be7#
- 1...Sxf6
- 2.Be7#
- 1...hxg2
- 2.Rh8#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bc1
- 2.Re8#
- 1...Bg1
- 2.Re8#
- 1...Bd2
- 2.Re8#
- 1...Bf2
- 2.Re8#
- 1...Bd4
- 2.Re8#
- 1...Sa2
- 2.Sc6#
- 1...Sd3
- 2.Sc6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc7
- 2.Be7#
- 2.bxc7#
- 1...Se7
- 2.Bxe7#
- 2.fxe7#
- 1...gxf6!
- 1...Rxb7+
- 1.Rxh3?
- threat
- 2.Rh8#
- 1...Rxb7+
- 2.Sxb7#
- 1...Sc7
- 2.bxc7#
- 1...Se7
- 2.fxe7#
- 1...Sxf6!
- threat
- 1.Qc4?
- 1...Rxb7+
- 2.Sxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8R#
- 1...Bxd4
- 2.Re8#
- 1...Sxc2
- 2.Sc6#
- 2.Qxd5#
- 1...Sxb6
- 2.Qc7#
- 1...Sxf6
- 2.Qc7#
- 1...hxg2
- 2.Rh8#
- 1...Rc8
- 2.Qxc8#
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bc1
- 2.Re8#
- 1...Bg1
- 2.Re8#
- 1...Bd2
- 2.Re8#
- 1...Bf2
- 2.Re8#
- 1...Sa2
- 2.Sc6#
- 2.Qxd5#
- 1...Sd3
- 2.Sc6#
- 2.Qxd5#
- 1...Sa6
- 2.Sc6#
- 2.Qxd5#
- 1...Sc6
- 2.Sxc6#
- 2.Qxd5#
- 1...Sc7
- 2.Qxc7#
- 2.bxc7#
- 1...Se7
- 2.Qc7#
- 2.fxe7#
- 1...gxf6!
- 1...Rxb7+
- 1.Qb5?
- threat
- 2.Qd7#
- 2.Qe8#
- 1...Rxb7+
- 2.Sxb7#
- 1...Sxb6
- 2.Qe8#
- 2.Qxb6#
- 1...Sc6
- 2.Sxc6#
- 2.Qxd5#
- 1...Sc7
- 2.Qd7#
- 2.bxc7#
- 1...Sxf6!
- threat
- 1.fxg7?
- threat
- 2.g8Q#
- 2.g8R#
- 1...Rxb7+
- 2.Sxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8R#
- 2.g8Q#
- 2.g8R#
- 1...Bxd4
- 2.Re8#
- 2.g8Q#
- 2.g8R#
- 1...Sxc2
- 2.Sc6#
- 2.g8Q#
- 2.g8R#
- 1...Sxb6
- 2.Bf6#
- 2.g8Q#
- 2.g8R#
- 1...hxg2
- 2.Rh8#
- 2.g8Q#
- 2.g8R#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8R#
- 2.g8Q#
- 2.g8R#
- 1...Bc1
- 2.Re8#
- 2.g8Q#
- 2.g8R#
- 1...Bg1
- 2.Re8#
- 2.g8Q#
- 2.g8R#
- 1...Bd2
- 2.Re8#
- 2.g8Q#
- 2.g8R#
- 1...Bf2
- 2.Re8#
- 2.g8Q#
- 2.g8R#
- 1...Sa2
- 2.Sc6#
- 2.g8Q#
- 2.g8R#
- 1...Sd3
- 2.Sc6#
- 2.g8Q#
- 2.g8R#
- 1...Sa6
- 2.Sc6#
- 2.g8Q#
- 2.g8R#
- 1...Sc6
- 2.Sxc6#
- 2.g8Q#
- 2.g8R#
- 1...Sf6
- 2.Bxf6#
- 1...Sc7
- 2.Bf6#
- 2.bxc7#
- 1...Se7!
- threat
- 1.Bc5?
- Keys
- 1.Qd3!
- 1...Rxb7+
- 2.Sxb7#
- 1...Rxa8
- 2.bxa8Q#
- 2.bxa8R#
- 1...Bxd4
- 2.Re8#
- 1...Sxc2
- 2.Sc6#
- 1...Sxd3
- 2.Sc6#
- 1...Sxb6
- 2.Bxb6#
- 1...Sxf6
- 2.Bxf6#
- 1...hxg2
- 2.Rh8#
- 1...gxf6
- 2.Bxf6#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8R#
- 1...Bc1
- 2.Re8#
- 1...Bg1
- 2.Re8#
- 1...Bd2
- 2.Re8#
- 1...Bf2
- 2.Re8#
- 1...Sa2
- 2.Sc6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc7
- 2.bxc7#
- 1...Se7
- 2.fxe7#
- 1...Rxb7+
- 1.Qd3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(h);CHECK,XP(M)::S(I),XR(h)
- R(h);OGATE,XS(O)::PXR(h)=Q
- R(h);OGATE::PXR(h)=Q
- B(b);OGATE::R1(A)
- B(b);OGATE,XB(G)::R1(A)
- S(d);N_GUARD::S(I)
- S(d);N_GUARD,XP(C)::S(I)
- S(d);N_GUARD::S(I),XS(d)
- S(f);OGATE::P(J),XS(f)
- S(f);OGATE::P(K),XS(f)
- P(c);OGATE,XP(D)::R(E)
- Tries
- Try
- B(G);
- Vars
- R(h);CHECK,XP(M)::S(I),XR(h)
- R(h);OGATE,XS(O)::PXR(h)=Q
- B(b);OGATE,XB(G)::R1(A)
- S(d);N_GUARD,XP(C)::S(I)
- S(f);N_GUARD,XP(J)::B(G)
- S(f);N_GUARD,XP(K)::B(G)
- P(c);OGATE,XP(D)::R(E)
- R(h);OGATE::PXR(h)=Q
- B(b);OGATE::R1(A)
- S(d);N_GUARD::S(I)
- S(d);N_GUARD::S(I),XS(d)
- Refutation
- P(g);XP(K)
- Try
- R(E);XP(c)
- Threat
- R(E)
- Vars
- R(h);CHECK,XP(M)::S(I),XR(h)
- S(f);OGATE::P(J),XS(f)
- S(f);OGATE::P(K),XS(f)
- Refutation
- S(f);XP(K)
- Try
- Q(B);
- Vars
- R(h);CHECK,XP(M)::S(I),XR(h)
- R(h);OGATE,XS(O)::PXR(h)=Q
- B(b);OGATE,XB(G)::R1(A)
- S(f);N_GUARD,XP(J)::QAB1(B)
- S(f);N_GUARD,XP(K)::QAB1(B)
- P(c);OGATE,XP(D)::R(E)
- B(b);OGATE::R1(A)
- Refutation
- P(g);XP(K)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(h);CHECK,XP(M)::S(I),XR(h)
- Refutation
- S(f);XP(K)
- Try
- P(K);XP(g)
- Threat
- P=Q
- Vars
- R(h);CHECK,XP(M)::S(I),XR(h)
- S(f);N_GUARD::B(G),XS(f)
- Refutation
- S(f);
- Try
- Actual
- Q(B);
- Vars
- R(h);CHECK,XP(M)::S(I),XR(h)
- R(h);OGATE,XS(O)::PXR(h)=Q
- B(b);OGATE,XB(G)::R1(A)
- S(d);N_GUARD,XP(C)::S(I)
- S(d);N_GUARD,XQ(B)::S(I)
- S(f);OGATE,XP(J)::QAR(B)+B(G),DCHECK,XS(f)
- S(f);OGATE,XP(K)::QAR(B)+B(G),DCHECK,XS(f)
- P(c);OGATE,XP(D)::R(E)
- P(g);OGATE,XP(K)::B(G),XP(g)
- R(h);OGATE::PXR(h)=Q
- B(b);OGATE::R1(A)
- S(d);N_GUARD::S(I)
- S(d);N_GUARD::S(I),XS(d)
- S(f);OGATE::P(J),XS(f)
- S(f);OGATE::P(K),XS(f)
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).