MESON Chess Problem Database
Problem Display
PID: 7907 (1r3rN1/RP1k1P1R/3p2p1/Bb5p/p2N4/K5p1/8/3Q4 w - - 0 1)
Battaglia, Emilio
The Problemist, 1994
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.bxa8Q#
- 2.bxa8R#
- 1...Rbc8
- 2.b8S#
- 1...Rbd8
- 2.b8Q#
- 2.b8R#
- 1...Rbe8
- 2.b8Q#
- 2.b8R#
- 1...Rfc8
- 2.f8Q#
- 2.f8R#
- 1...Rfd8
- 2.f8Q#
- 2.f8R#
- 1...Rfe8
- 2.f8S#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...h4
- 2.Qg4#
- 1...Ra8
- Tries
- 1.Qe2?
- threat
- 2.Sf6#
- 2.Qxb5#
- 2.Qe6#
- 2.Qe7#
- 1...Rxb7
- 2.Qe6#
- 1...Rxf7
- 2.Sf6#
- 2.Rxf7#
- 2.Qxb5#
- 2.Qe6#
- 1...Rxg8
- 2.Qe6#
- 2.fxg8Q#
- 2.fxg8S#
- 2.fxg8B#
- 2.fxg8R#
- 2.f8S#
- 1...d5
- 2.Qe6#
- 2.Qe7#
- 1...Rbc8
- 2.Sf6#
- 2.Qe6#
- 2.Qe7#
- 2.b8S#
- 1...Rbe8
- 2.Sf6#
- 2.Qxb5#
- 2.b8Q#
- 2.b8R#
- 2.fxe8Q#
- 2.fxe8B#
- 1...Rfc8
- 2.Sf6#
- 2.Qe6#
- 2.Qe7#
- 2.f8Q#
- 2.f8S#
- 2.f8B#
- 2.f8R#
- 1...Rfe8
- 2.Sf6#
- 2.Qxb5#
- 2.fxe8Q#
- 2.fxe8S#
- 2.fxe8B#
- 2.fxe8R#
- 2.f8S#
- 1...Bd3
- 2.Sf6#
- 2.Qe6#
- 2.Qe7#
- 1...Bc4
- 2.Sf6#
- 2.Qe7#
- 1...Ba6
- 2.Sf6#
- 2.Qe6#
- 2.Qe7#
- 1...Bc6
- 2.Sf6#
- 2.Qe6#
- 2.Qe7#
- 1...Bxe2!
- threat
- 1.Qe1?
- threat
- 2.Sf6#
- 2.Qe6#
- 2.Qe7#
- 1...Rxb7
- 2.Qe6#
- 1...Rxf7
- 2.Sf6#
- 2.Rxf7#
- 2.Qe6#
- 1...Rxg8
- 2.Qe6#
- 2.fxg8Q#
- 2.fxg8S#
- 2.fxg8B#
- 2.fxg8R#
- 2.f8S#
- 1...d5
- 2.Qe6#
- 2.Qe7#
- 1...Bc4
- 2.Sf6#
- 2.Qe7#
- 1...Rbe8
- 2.Sf6#
- 2.b8Q#
- 2.b8R#
- 2.fxe8Q#
- 2.fxe8B#
- 1...Rfe8
- 2.Sf6#
- 2.fxe8Q#
- 2.fxe8S#
- 2.fxe8B#
- 2.fxe8R#
- 2.f8S#
- 1...Be2!
- threat
- 1.Qe2?
- Keys
- 1.Qf3!
- 1...Rxb7
- 2.Qxb7#
- 1...Rxf7
- 2.Qxf7#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...d5
- 2.Qxd5#
- 1...Bc4
- 2.Qc6#
- 1...Ra8
- 2.bxa8Q#
- 2.bxa8R#
- 1...Rbc8
- 2.b8S#
- 1...Rbd8
- 2.b8Q#
- 2.b8R#
- 1...Rbe8
- 2.b8Q#
- 2.b8R#
- 1...Rfc8
- 2.f8Q#
- 2.f8R#
- 1...Rfd8
- 2.f8Q#
- 2.f8R#
- 1...Rfe8
- 2.f8S#
- 1...Bf1
- 2.Qc6#
- 1...Be2
- 2.Qc6#
- 1...Bd3
- 2.Qc6#
- 1...Ba6
- 2.Qc6#
- 1...Bc6
- 2.Qxc6#
- 1...g2
- 2.Qh3#
- 1...h4
- 2.Qg4#
- 1...g5
- 2.Qf5#
- 1...Rxb7
- 1.Qf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 0
- Sets
- R(h);OGATE::PXR(h)=Q
- R(h);OGATE,SBLOCK::P=S
- R(h);OGATE::P=Q
- R(i);OGATE::P=Q
- R(i);OGATE,SBLOCK::P=S
- R(i);OGATE,XS(I)::PXR(i)=Q
- P(d);N_GUARD::QAB(A)
- Tries
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(h);P_SPINR(h),XP(F)::QAB1(A)
- Refutation
- B(c);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(h);P_SPINR(h),XP(F)::QAB1(A)
- Refutation
- B(c);
- Try
- Actual
- Q(A);
- Vars
- R(h);OGATE,P_SPINR(h),XP(F)::QAR2(A),XR(h)
- R(i);OGATE,P_SPINR(i),XP(G)::QAR2(A),XR(i)
- R(i);OGATE,XS(I)::PXR(i)=Q
- P(e);OGATEB::QAR2(A),XP(e)
- B(c);N_GUARD::QAB1(A)
- R(h);OGATE::PXR(h)=Q
- R(h);OGATE,SBLOCK::P=S
- R(h);OGATE::P=Q
- R(i);OGATE::P=Q
- R(i);OGATE,SBLOCK::P=S
- B(c);N_GUARD::QAB1(A),XB(c)
- P(a);OGATE::QAB(A)
- P(d);N_GUARD::QAB(A)
- P(f);N_GUARD::QAB(A)
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).