MESON Chess Problem Database
Problem Display
PID: 145701 (4R3/7p/1K3P2/ppPk3r/r5RP/1PBBpN2/2NpP3/1b1n1Q1q w - - 0 1)
Rice, John Michael
Die Schwalbe, 2011
#2
13 + 11
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Be4#
- 2.Rd4#
- 1...Ra2
- 2.Be4#
- 2.Rd4#
- 1...Ra3
- 2.Be4#
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Re4
- 2.Bxe4#
- 1...Rxh4
- 2.Rg5#
- 2.Re5#
- 1...Re5
- 2.Rxe5#
- 1...Rg5
- 2.Rxg5#
- 1...Rh6
- 2.Rg5#
- 2.Re5#
- 1...Sb2
- 2.Sxe3#
- 1...Sf2
- 2.Sxe3#
- 1...Sxc3
- 2.Sxe3#
- 1...b4
- 2.Bc4#
- 2.Be4#
- 2.Rd4#
- 1...Ra1
- Tries
- 1.Sb4+?
- 1...axb4
- 2.Rd4#
- 1...Rxb4!
- 1...axb4
- 1.Scd4?
- threat
- 2.Rd8#
- 1...Qxf3
- 2.Qxf3#
- 1...Rxd4
- 2.Rxd4#
- 1...Qh2!
- threat
- 1.Sg5?
- threat
- 2.Re5#
- 2.Rd8#
- 2.Qf5#
- 1...Qxf1
- 2.Re5#
- 2.Rd8#
- 1...Rxg5
- 2.Rxg5#
- 1...Sxc3
- 2.Sxe3#
- 2.Qf5#
- 1...Qf3
- 2.Re5#
- 2.Rd8#
- 1...Qe4
- 2.Rd8#
- 1...Rd4
- 2.Rxd4#
- 2.Qf5#
- 1...Re4
- 2.Rd8#
- 1...Rf4
- 2.Re5#
- 2.Rd8#
- 1...Sf2
- 2.Sxe3#
- 2.Re5#
- 2.Rd8#
- 1...Qh2!
- threat
- 1.Bb4?
- threat
- 2.Be4#
- 2.Rd4#
- 1...Qxf3
- 2.Rd4#
- 2.Qxf3#
- 1...Qxh4
- 2.Be4#
- 1...Rxh4
- 2.Be4#
- 2.Rg5#
- 2.Re5#
- 1...Bxc2
- 2.Rd4#
- 1...Re5
- 2.Rd4#
- 2.Rxe5#
- 1...Sf2
- 2.Sxe3#
- 2.Rd4#
- 1...Sc3
- 2.Sxe3#
- 2.Rd4#
- 1...Rxb4!
- threat
- 1.Bd4?
- threat
- 2.Be4#
- 1...Qxf3
- 2.Qxf3#
- 1...Rxd4
- 2.Rxd4#
- 1...Re5
- 2.Rxe5#
- 1...Sf2
- 2.Sxe3#
- 1...Sc3
- 2.Sxe3#
- 1...Bxc2!
- threat
- 1.Bc4+?
- 1...bxc4
- 2.Rd4#
- 1...Rxc4!
- 1...bxc4
- 1.Bf5?
- threat
- 2.Be6#
- 2.Re5#
- 2.Rd8#
- 1...Rxg4
- 2.Re5#
- 2.Rd8#
- 1...Qh2
- 2.Be6#
- 1...Re4
- 2.Bxe4#
- 2.Rd8#
- 1...Rf4
- 2.Re5#
- 2.Rd8#
- 1...Rxf5!
- threat
- 1.Bg6?
- threat
- 2.Bf7#
- 1...Re4
- 2.Bxe4#
- 1...Re5
- 2.Rxe5#
- 1...hxg6!
- threat
- 1.Bxh7?
- threat
- 2.Bg8#
- 1...Rxh7
- 2.Rg5#
- 2.Re5#
- 1...Re4
- 2.Bxe4#
- 1...Re5
- 2.Rxe5#
- 1...Rg5
- 2.Rxg5#
- 1...Rxg4!
- threat
- 1.Rxa4?
- threat
- 2.Be4#
- 2.Rd4#
- 1...Qxf3
- 2.Rd4#
- 2.Qxf3#
- 1...Rxh4
- 2.Re5#
- 1...Bxc2
- 2.Rd4#
- 1...Sxc3
- 2.Sxe3#
- 2.Rd4#
- 1...bxa4
- 2.Bc4#
- 2.Be4#
- 1...Re5
- 2.Rd4#
- 2.Rxe5#
- 1...Sf2
- 2.Sxe3#
- 2.Rd4#
- 1...b4
- 2.Bc4#
- 2.Be4#
- 1...Qxh4!
- threat
- 1.bxa4?
- threat
- 2.Rd4#
- 1...Rxh4
- 2.Rg5#
- 2.Re5#
- 1...Qxh4!
- threat
- 1.Sb4+?
- Keys
- 1.Sfd4!
- threat
- 2.Qxh1#
- 1...Qxf1
- 2.Be4#
- 1...Qxh4
- 2.Be4#
- 2.Qg2#
- 2.Qf3#
- 1...Rxd4
- 2.Rxd4#
- 1...Rxh4
- 2.Rg5#
- 2.Qf5#
- 1...Sxc3
- 2.Sxe3#
- 1...Qg2
- 2.Qxg2#
- 1...Qf3
- 2.Qxf3#
- 1...Qe4
- 2.Bxe4#
- 1...Qg1
- 2.Be4#
- 2.Qf3#
- 1...Qh2
- 2.Be4#
- 2.Qf3#
- 1...Qh3
- 2.Be4#
- 1...Re5
- 2.Rd8#
- 1...Rf5
- 2.Qxf5#
- 1...Sf2
- 2.Sxe3#
- threat
- 1.Sfd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- R(f);N_GUARD::R1(H),XR(f)
- R(f);N_GUARD::B(F),XR(f)
- R(j);N_GUARD::R1(M),XR(j)
- R(j);N_GUARD::R(H),XR(j)
- S(b);N_GUARD::S(B),XP(e)
- S(b);N_GUARD,XB(E)::S(B),XP(e)
- Tries
- Try
- S(B);CHECK
- Vars
- P(g);XS(B)::R1(H)
- Refutation
- R(f);XS(B)
- Try
- S(B);
- Threat
- R(M)
- Vars
- Q(c);OGATE,XS(G)::QAB(A),XQ(c)
- R(f);OGATE,XS(B)::R1(H),XR(f)
- Refutation
- Q(c);
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- R(j);OGATE,XS(G)::R(H),XR(j)
- Q(c);::R(M)
- R(f);::R(M)
- Refutation
- Q(c);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(c);XP(I)::B(F)
- B(a);XS(B)::R1(H)
- Refutation
- R(f);XB(E)
- Try
- B(E);
- Threat
- B(F)
- Vars
- Q(c);OGATE,XS(G)::QAB(A),XQ(c)
- R(f);OGATE,XB(E)::R1(H),XR(f)
- R(j);N_GUARD::R1(M),XR(j)
- S(b);N_GUARD::S(B),XP(e)
- Refutation
- B(a);XS(B)
- Try
- B(F);CHECK
- Vars
- P(h);XB(F)::R1(H)
- Refutation
- R(f);XB(F)
- Try
- B(F);
- Threat
- DUALS(3)
- Vars
- Q(c);::B(F)
- Refutation
- R(j);XB(F)
- Try
- B(F);
- Threat
- B(F)
- Vars
- R(f);N_GUARD::B(F),XR(f)
- R(j);N_GUARD::R1(M),XR(j)
- Refutation
- P(k);XB(F)
- Try
- B(F);XP(k)
- Threat
- B(F)
- Vars
- R(f);N_GUARD::B(F),XR(f)
- R(j);N_GUARD::R1(M),XR(j)
- R(j);N_GUARD::R(H),XR(j)
- Refutation
- R(f);XR(H)
- Try
- R(H);XR(f)
- Threat
- DUALS(2)
- Vars
- R(j);N_GUARD,XP(I)::R1(M)
- B(a);XS(B)::R1(H)
- Refutation
- Q(c);XP(I)
- Try
- P(D);XR(f)
- Threat
- R1(H)
- Refutation
- Q(c);XP(I)
- Try
- Actual
- S(G);
- Threat
- QAB(A),XQ(c)
- Vars
- Q(c);N_GUARD,XQ(A)::B(F)
- R(f);OGATE,XS(G)::R1(H),XR(f)
- S(b);N_GUARD,XB(E)::S(B),XP(e)
- Q(c);N_GUARD::QAB(A),XQ(c)
- Q(c);N_GUARD::B(F),XQ(c)
- Q(c);N_GUARD::B(F)
- R(j);SBLOCK::R(M)
- R(j);N_GUARD::QAR2(A),XR(j)
- S(b);N_GUARD::S(B),XP(e)
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).