MESON Chess Problem Database
Problem Display
PID: 46678 (4n2q/1B1PNpQ1/1p2Pr1n/1P1R4/1NP1k1p1/2r2pP1/1Bp2K2/b7 w - - 0 1)
Rice, John Michael
The Problemist, 2003
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 1...Rb3
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 1...Rd3
- 2.Rxd3#
- 2.Re5#
- 1...Re3
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 1...Rxc4
- 2.Rc5#
- 2.Re5#
- 1...Rf4
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rc5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 1...Rf5
- 2.Rd4#
- 2.Rxf5#
- 1...Rxe6
- 2.Rd4#
- 2.Rd6#
- 1...Rg6
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rc5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 1...Sf5
- 2.Qxg4#
- 1...Ra3
- Tries
- 1.Sd3?
- threat
- 2.Rd6#
- 1...Rxd3
- 2.Re5#
- 1...Rxc4
- 2.Rd4#
- 1...Rf5
- 2.Rd4#
- 1...Sd6
- 2.Rxd6#
- 1...Sc7!
- threat
- 1.Sbc6?
- threat
- 2.Rd4#
- 1...Rd3
- 2.Re5#
- 1...Sf5
- 2.Qxg4#
- 1...Rxc4!
- threat
- 1.Sec6?
- threat
- 2.Re5#
- 1...Rf5
- 2.Rd4#
- 1...Rxe6!
- threat
- 1.Bxc3?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 1...Rxe6
- 2.Rd4#
- 2.Re5#
- 2.Rd6#
- 1...Rf5
- 2.Rd4#
- 2.Re5#
- 2.Rxf5#
- 1...Sf5
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rc5#
- 2.Re5#
- 2.Rxf5#
- 2.Rd6#
- 2.Qxg4#
- 1...Sd6
- 2.Re5#
- 2.Rxd6#
- 1...Sc7
- 2.Re5#
- 1...Bxc3!
- threat
- 1.Qxg4+?
- 1...Rf4
- 2.Qxf4#
- 1...Sxg4+!
- 1...Rf4
- 1.Qg5?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd6#
- 2.Qe5#
- 1...Rxc4
- 2.Rd4#
- 2.Rc5#
- 2.Re5#
- 2.Qe3#
- 2.Qe5#
- 1...Rxe6
- 2.Rd6#
- 2.Qf4#
- 1...Rd3
- 2.Rxd3#
- 2.Rd4#
- 2.Re5#
- 2.Qe5#
- 1...Rf4
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd6#
- 2.Qxf4#
- 1...Rg6
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd6#
- 2.Qf4#
- 1...Sf5
- 2.Qf4#
- 2.Qxg4#
- 1...Sd6
- 2.Rxd6#
- 2.Qe5#
- 1...Sc7
- 2.Qe5#
- 1...Rf5!
- threat
- 1.dxe8S?
- threat
- 2.Sd6#
- 2.Sxf6#
- 1...Qxg7
- 2.Sd6#
- 1...Rxe6
- 2.Rd4#
- 2.Rd6#
- 1...Rf5
- 2.Sd6#
- 2.Rd4#
- 2.Rxf5#
- 1...Rf4
- 2.Sd6#
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rc5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Rg6
- 2.Sd6#
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rc5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Sf5
- 2.Sxf6#
- 2.Qxg4#
- 1...Sg8
- 2.Sd6#
- 1...Qxe8!
- threat
- 1.Sd3?
- Keys
- 1.Sf5!
- threat
- 2.Rc5#
- 1...Rxf5
- 2.Rd4#
- 1...Rxe6
- 2.Re5#
- 1...Sxf5
- 2.Qxg4#
- 1...Rd3
- 2.Re5#
- 1...Sd6
- 2.Sxd6#
- 1...Sc7
- 2.Sd6#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- S(i);N_GUARD,S_CUTR(h)::QAR2(L),XP(f)
- Tries
- Try
- S(D);
- Threat
- B(I)+R(G)
- Vars
- R(c);SBLOCK,XS(D)::B(I)+R(G),DCHECK
- R(c);XP(E)::B(I)+R(G),DCHECK
- R(h);::B(I)+R(G),DCHECK
- S(k);::B(I)+R(G),XS(k)
- Refutation
- S(k);
- Try
- S(D);
- Threat
- R1(G)
- Vars
- R(c);SBLOCK::R1(G)
- S(i);N_GUARD,S_CUTR(h)::QAR2(L),XP(f)
- Refutation
- R(c);XP(E)
- Try
- S(K);
- Threat
- R1(G)
- Vars
- R(h);SBLOCK::R1(G)
- Refutation
- R(h);XP(H)
- Try
- B(A);XR(c)
- Threat
- DUALS(9)
- Vars
- S(k);::B(I)+R(G),DCHECK
- Refutation
- B(a);XB(A)
- Try
- Q(L);CHECK,XP(f)
- Vars
- R(h);N_GUARD,P_SPINR(h)::QAR1(L),XR(h)
- Refutation
- S(i);CHECK,XQ(L)
- Try
- Q(L);
- Threat
- DUALS(5)
- Vars
- S(k);::QAR1(L)
- Refutation
- R(h);
- Try
- P(J);XS(k)
- Threat
- DUALS(2)
- Vars
- Q(l);XQ(L)::S(J)
- S(i);::S(J)
- Refutation
- Q(l);XS(J)
- Try
- Actual
- S(K);
- Threat
- B(I)+R(G)
- Vars
- R(h);SBLOCK,XS(K)::B(I)+R(G),DCHECK
- R(h);XP(H)::B(I)+R(G),DCHECK
- S(i);N_GUARD,XS(K)::QAR2(L),XP(f)
- R(c);::B(I)+R(G),DCHECK
- S(k);N_GUARD::S(K),XS(k)
- S(k);N_GUARD::S(K)
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).