MESON Chess Problem Database
Problem Display
PID: 2553 (b1Q1n3/5B1N/3P2Kp/1N2p3/r3k2r/2p2Rn1/5PP1/8 w - - 0 1)
St Maurice, Ephrem
Source?, 0000
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.Qxa8#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Sxc3#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Rh1
- 2.Qg4#
- 1...Rh2
- 2.Qg4#
- 1...Rh3
- 2.Qg4#
- 1...Rf4
- 2.Re3#
- 1...Rg4+
- 2.Qxg4#
- 1...Rh5
- 2.Qg4#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sf1
- 2.Qf5#
- 1...Sh1
- 2.Qf5#
- 1...Se2
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sh5
- 2.Qf5#
- 1...Sxd6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...c2
- 2.Qxc2#
- 1...h5
- 2.Sg5#
- 1...Ra1
- Tries
- 1.Ba2?
- 1...Rg4+
- 2.Qxg4#
- 1...Rxa2
- 2.Qc4#
- 1...Sxd6
- 2.Sf6#
- 1...Rc4
- 2.Qxc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.Qxa8#
- 1...Rd4
- 2.Sxc3#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Rh1
- 2.Qg4#
- 1...Rh2
- 2.Qg4#
- 1...Rh3
- 2.Qg4#
- 1...Rf4
- 2.Re3#
- 1...Rh5
- 2.Qg4#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sf1
- 2.Qf5#
- 1...Sh1
- 2.Qf5#
- 1...Se2
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sh5
- 2.Qf5#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...c2
- 2.Qxc2#
- 1...h5
- 2.Sg5#
- 1...Bd5!
- 1...Rg4+
- 1.Bg8?
- 1...Rg4+
- 2.Qxg4#
- 1...Sxd6
- 2.Sf6#
- 1...Ra1
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.Qxa8#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Sxc3#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Rh1
- 2.Qg4#
- 1...Rh2
- 2.Qg4#
- 1...Rh3
- 2.Qg4#
- 1...Rf4
- 2.Re3#
- 1...Rh5
- 2.Qg4#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sf1
- 2.Qf5#
- 1...Sh1
- 2.Qf5#
- 1...Se2
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sh5
- 2.Qf5#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...c2
- 2.Qxc2#
- 1...h5
- 2.Sg5#
- 1...Bd5!
- 1...Rg4+
- 1.Qh3?
- threat
- 2.Qxh4#
- 1...Rg4+
- 2.Qxg4#
- 1...Rf4
- 2.Re3#
- 1...Rh5
- 2.Qg4#
- 1...Se2
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sh5
- 2.Qf5#
- 1...Sf6
- 2.Sxf6#
- 1...Rxh3!
- threat
- 1.Qxc3?
- threat
- 2.Qc2#
- 2.Qd3#
- 2.Qe3#
- 1...Ra2
- 2.Qb4#
- 2.Qd3#
- 2.Qe3#
- 2.Qc4#
- 1...Ra3
- 2.Qb4#
- 2.Qc4#
- 1...Rc4
- 2.Qd3#
- 2.Qe3#
- 2.Qxc4#
- 1...Rd4
- 2.Qe3#
- 1...Sf1
- 2.Qc2#
- 2.Qd3#
- 1...Sf5
- 2.Qc2#
- 2.Qd3#
- 1...Rg4+!
- threat
- 1.Qc5?
- threat
- 2.Sxc3#
- 2.Qe3#
- 1...Ra3
- 2.Qe3#
- 2.Qb4#
- 2.Qc4#
- 1...Rc4
- 2.Qe3#
- 2.Qxc4#
- 1...Rd4
- 2.Sxc3#
- 1...Sf1
- 2.Sxc3#
- 1...Se2
- 2.Qe3#
- 1...Sf5
- 2.Sxc3#
- 1...c2
- 2.Sc3#
- 2.Qe3#
- 2.Qxc2#
- 1...Rg4+!
- threat
- 1.fxg3?
- threat
- 2.Qf5#
- 1...Rg4+
- 2.Qxg4#
- 1...Sxd6
- 2.Sf6#
- 1...Rh5
- 2.Qg4#
- 1...Sg7
- 2.Sf6#
- 1...Rf4!
- threat
- 1.Ba2?
- Keys
- 1.Bb3!
- 1...Rg4+
- 2.Qxg4#
- 1...Sxd6
- 2.Sf6#
- 1...Rc4
- 2.Qxc4#
- 1...Bd5
- 2.Bc2#
- 1...Ra1
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.Qxa8#
- 1...Rd4
- 2.Sxc3#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Rh1
- 2.Qg4#
- 1...Rh2
- 2.Qg4#
- 1...Rh3
- 2.Qg4#
- 1...Rf4
- 2.Re3#
- 1...Rh5
- 2.Qg4#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sf1
- 2.Qf5#
- 1...Sh1
- 2.Qf5#
- 1...Se2
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sh5
- 2.Qf5#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Sg7
- 2.Sf6#
- 1...c2
- 2.Qxc2#
- 1...h5
- 2.Sg5#
- 1...Rg4+
- 1.Bb3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::QAR2(I)
- R(c);N_GUARD::QAB(I),XB(h)
- R(c);N_GUARD::QAR2(I),XR(c)
- R(c);SBLOCK::S(D),XP(a)
- R(c);N_GUARD,P_PINP(E)::QAR2(I)
- R(e);N_GUARD::QAR2(I)
- R(e);SBLOCK::R1(C)
- R(e);CHECK,N_GUARD::QAR2(I),XR(e)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::QAB1(I)
- S(b);N_GUARD::QAB1(I),XS(b)
- S(i);N_GUARD,XP(E)::S(H)
- S(i);N_GUARD::S(H),XS(i)
- S(i);N_GUARD::S(H)
- P(a);OGATE::QAB(I),XP(a)
- P(g);N_GUARD::S(H)
- Tries
- Try
- B(G);
- Vars
- R(e);CHECK,N_GUARD::QAR2(I),XR(e)
- R(c);N_GUARD,XB(G)::QAR2(I)
- S(i);N_GUARD,XP(E)::S(H)
- R(c);N_GUARD::QAR2(I),XR(c)
- R(c);N_GUARD::QAR2(I)
- R(c);N_GUARD::QAB(I),XB(h)
- R(c);SBLOCK::S(D),XP(a)
- R(c);N_GUARD,P_PINP(E)::QAR2(I)
- R(e);N_GUARD::QAR2(I)
- R(e);SBLOCK::R1(C)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::QAB1(I)
- S(b);N_GUARD::QAB1(I),XS(b)
- S(i);N_GUARD::S(H),XS(i)
- S(i);N_GUARD::S(H)
- P(a);OGATE::QAB(I),XP(a)
- P(g);N_GUARD::S(H)
- Refutation
- B(h);
- Try
- B(G);
- Vars
- R(e);CHECK,N_GUARD::QAR2(I),XR(e)
- S(i);N_GUARD,XP(E)::S(H)
- R(c);N_GUARD::QAR2(I)
- R(c);N_GUARD::QAB(I),XB(h)
- R(c);N_GUARD::QAR2(I),XR(c)
- R(c);SBLOCK::S(D),XP(a)
- R(c);N_GUARD,P_PINP(E)::QAR2(I)
- R(e);N_GUARD::QAR2(I)
- R(e);SBLOCK::R1(C)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::QAB1(I)
- S(b);N_GUARD::QAB1(I),XS(b)
- S(i);N_GUARD::S(H),XS(i)
- S(i);N_GUARD::S(H)
- P(a);OGATE::QAB(I),XP(a)
- P(g);N_GUARD::S(H)
- Refutation
- B(h);
- Try
- Q(I);
- Threat
- QAR(I),XR(e)
- Vars
- R(e);CHECK,N_GUARD::QAR2(I),XR(e)
- R(e);SBLOCK::R1(C)
- R(e);N_GUARD::QAR2(I)
- S(b);N_GUARD::QAB1(I)
- S(b);N_GUARD::QAB1(I),XS(b)
- S(i);N_GUARD::S(H),XS(i)
- Refutation
- R(e);XQ(I)
- Try
- Q(I);XP(a)
- Threat
- DUALS(3)
- Vars
- R(c);::QAR1(I)
- Refutation
- R(e);CHECK
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(c);::S(D),XP(a)
- S(b);::S(D),XP(a)
- S(b);::QAR1(I)
- Refutation
- R(e);CHECK
- Try
- P(A);XS(b)
- Threat
- QAB1(I)
- Vars
- R(e);CHECK,N_GUARD::QAR2(I),XR(e)
- S(i);N_GUARD,XP(E)::S(H)
- R(e);N_GUARD::QAR2(I)
- S(i);N_GUARD::S(H)
- Refutation
- R(e);
- Try
- Actual
- B(G);
- Vars
- R(e);CHECK,N_GUARD::QAR2(I),XR(e)
- S(i);N_GUARD,XP(E)::S(H)
- R(c);N_GUARD::QAR2(I),XR(c)
- B(h);SBLOCK::B(G)
- R(c);N_GUARD::QAR2(I)
- R(c);N_GUARD::QAB(I),XB(h)
- R(c);SBLOCK::S(D),XP(a)
- R(c);N_GUARD,P_PINP(E)::QAR2(I)
- R(e);N_GUARD::QAR2(I)
- R(e);SBLOCK::R1(C)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::QAB1(I)
- S(b);N_GUARD::QAB1(I),XS(b)
- S(i);N_GUARD::S(H),XS(i)
- S(i);N_GUARD::S(H)
- P(a);OGATE::QAB(I),XP(a)
- P(g);N_GUARD::S(H)
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).