MESON Chess Problem Database
Problem Display
PID: 190379 (1b4QK/n1ppP3/RPPkrpN1/1R5p/1P6/2N5/6B1/4r3 w - - 0 1)
Rice, John Michael
The Problemist Supplement, 2018
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Re2
- 2.Qd5#
- 1...Re3
- 2.Qd5#
- 1...Re4
- 2.Qd5#
- 1...Rxe7
- 2.Qd5#
- 1...Sxb5
- 2.Sxb5#
- 1...Sxc6
- 2.Rd5#
- 1...cxb6
- 2.Qxb8#
- 1...dxc6
- 2.Qd8#
- 1...Re2
- Tries
- 1.Qd8?
- threat
- 2.Qxd7#
- 1...Sxc6
- 2.Rd5#
- 1...Rxe7!
- threat
- 1.Qe8?
- threat
- 2.Qxd7#
- 1...Sxc6
- 2.Rd5#
- 1...dxc6
- 2.Qd8#
- 1...Rxe7!
- threat
- 1.cxd7?
- threat
- 2.d8Q#
- 2.d8R#
- 1...Kxd7
- 2.Qd8#
- 1...Rxe7
- 2.Qd5#
- 1...Sxb5
- 2.d8Q#
- 2.d8R#
- 1...R6e4
- 2.Qd5#
- 1...Ra1
- 2.d8Q#
- 2.d8R#
- 1...Rb1
- 2.d8Q#
- 2.d8R#
- 1...Rc1
- 2.d8Q#
- 2.d8R#
- 1...Rd1
- 2.d8Q#
- 2.d8R#
- 1...Rf1
- 2.d8Q#
- 2.d8R#
- 1...Rg1
- 2.d8Q#
- 2.d8R#
- 1...Rh1
- 2.d8Q#
- 2.d8R#
- 1...R1e2
- 2.d8Q#
- 2.d8R#
- 1...R1e3
- 2.d8Q#
- 2.d8R#
- 1...R1e5
- 2.d8Q#
- 2.d8R#
- 1...R6e2
- 2.Qd5#
- 2.d8Q#
- 2.d8R#
- 1...R6e3
- 2.Qd5#
- 2.d8Q#
- 2.d8R#
- 1...R6e5
- 2.d8Q#
- 2.d8R#
- 1...Sc6
- 2.Rd5#
- 1...Sc8
- 2.d8Q#
- 2.d8R#
- 1...h4
- 2.d8Q#
- 2.d8R#
- 1...f5
- 2.d8Q#
- 2.d8R#
- 1...c5
- 2.d8Q#
- 2.d8R#
- 1...c6
- 2.d8Q#
- 2.d8R#
- 1...R1e4!
- threat
- 1.e8Q?
- threat
- 2.Qxd7#
- 1...Sxc6
- 2.Rd5#
- 1...dxc6
- 2.Qd8#
- 1...Re7
- 2.Qd5#
- 1...Rxe8!
- threat
- 1.Qd8?
- Keys
- 1.bxc7!
- threat
- 2.cxb8Q#
- 2.cxb8B#
- 1...Kxc7
- 2.Qxb8#
- 1...Rxe7
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bxc7
- 2.Rd5#
- 1...Sxb5
- 2.Sxb5#
- 1...Sxc6
- 2.cxb8Q#
- 2.cxb8B#
- 1...dxc6
- 2.Qd8#
- 1...Ra1
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rb1
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rc1
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rd1
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rf1
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rg1
- 2.cxb8Q#
- 2.cxb8B#
- 1...Rh1
- 2.cxb8Q#
- 2.cxb8B#
- 1...R1e2
- 2.cxb8Q#
- 2.cxb8B#
- 1...R1e3
- 2.cxb8Q#
- 2.cxb8B#
- 1...R1e4
- 2.cxb8Q#
- 2.cxb8B#
- 1...R1e5
- 2.cxb8Q#
- 2.cxb8B#
- 1...R6e2
- 2.cxb8Q#
- 2.cxb8B#
- 1...R6e3
- 2.cxb8Q#
- 2.cxb8B#
- 1...R6e4
- 2.cxb8Q#
- 2.cxb8B#
- 1...R6e5
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sc8
- 2.cxb8Q#
- 2.cxb8B#
- 1...h4
- 2.cxb8Q#
- 2.cxb8B#
- 1...f5
- 2.cxb8Q#
- 2.cxb8B#
- threat
- 1.bxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(d);OGATE::QAR1(J)
- R(d);OGATE,XP(I)::QAR1(J)
- S(f);XR(D)::S(B),XS(f)
- S(f);SBLOCK,XP(G)::R1(D)
- P(g);OGATEB,XP(F)::QAB(J),XB(i)
- P(h);OGATEB,XP(G)::QAR2(J)
- Tries
- Try
- Q(J);P_PINP(h)
- Threat
- QAR1(J),XP(h)
- Vars
- S(f);SBLOCK,XP(G)::R1(D)
- Refutation
- R(d);XP(I)
- Try
- Q(J);
- Threat
- QAR1(J),XP(h)
- Vars
- S(f);SBLOCK,XP(G)::R1(D)
- P(h);OGATEB,XP(G)::QAR2(J)
- Refutation
- R(d);XP(I)
- Try
- P(G);XP(h)
- Threat
- P=Q
- Vars
- K(c);OGATEB,P-FLIGHT,XP(G)::QAR1(J)
- R(d);OGATE,XP(I)::QAR1(J)
- S(f);XR(D)::P=Q
- R(d);OGATE::QAR1(J)
- R(a);::P=Q
- R(d);::P=Q
- S(f);SBLOCK::R1(D)
- S(f);::P=Q
- P(b);::P=Q
- P(e);::P=Q
- P(g);::P=Q
- Refutation
- R(a);
- Try
- P(I);
- Threat
- QAR1(I),XP(h)
- Vars
- S(f);SBLOCK,XP(G)::R1(D)
- P(h);OGATEB,XP(G)::QAR2(I)
- R(d);OGATE::QAR1(J)
- Refutation
- R(d);P_PINQ(J),XQ(I)
- Try
- Actual
- P(F);XP(g)
- Threat
- PXB(i)=Q
- Vars
- K(c);OGATEB,S_FLIGHT,XP(F)::QAB1(J),XB(i)
- R(d);XP(I)::PXB(i)=Q
- B(i);SBLOCK,XP(F)::R1(D)
- S(f);XR(D)::S(B),XS(f)
- S(f);P_SPINS(f),XP(G)::PXB(i)=Q
- P(h);OGATEB,P_SPINP(h),XP(G)::QAR2(J)
- R(a);::PXB(i)=Q
- R(d);::PXB(i)=Q
- S(f);::PXB(i)=Q
- P(b);::PXB(i)=Q
- P(e);::PXB(i)=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).