MESON Chess Problem Database
Problem Display
PID: 57864 (Q1R5/8/1P1p4/1p1p1P1p/1b1kp1rR/3N2N1/1PPp1PK1/3B2B1 w - - 0 1)
Anonymous
Chess Life, 1958
#2
13 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxg3+
- 2.fxg3#
- 1...Rf4
- 2.Se2#
- 1...Rxh4
- 2.Se2#
- 1...Rg5
- 2.f3#
- 1...Rg6
- 2.f3#
- 1...Rg7
- 2.f3#
- 1...Rg8
- 2.f3#
- 1...Bc3
- 2.bxc3#
- 1...exd3
- 2.f4#
- 1...e3
- 2.fxe3#
- 1...Rxg3+
- Tries
- 1.Kf1?
- threat
- 2.Se2#
- 1...Rxg3
- 2.fxg3#
- 1...exd3
- 2.f4#
- 1...e3
- 2.fxe3#
- 1...Bc5!
- threat
- 1.Rxg4?
- threat
- 2.Se2#
- 2.f3#
- 1...hxg4
- 2.Se2#
- 1...Bc5!
- threat
- 1.Qa4?
- threat
- 2.Qxb4#
- 1...Rxg3+
- 2.fxg3#
- 1...exd3
- 2.f4#
- 1...bxa4!
- threat
- 1.Qa5?
- threat
- 2.Qxb4#
- 1...Rxg3+
- 2.fxg3#
- 1...exd3
- 2.f4#
- 1...Bc5
- 2.Qc3#
- 1...Ba3
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 2.bxc3#
- 1...Bxa5!
- threat
- 1.c3+?
- 1...Kxd3
- 2.Qxd5#
- 1...Bxc3!
- 1...Kxd3
- 1.Kf1?
- Keys
- 1.Qa1!
- 1...Rxg3+
- 2.fxg3#
- 1...Rxh4
- 2.Se2#
- 1...exd3
- 2.f4#
- 1...Bc5
- 2.b3#
- 1...Ba3
- 2.bxa3#
- 1...Rf4
- 2.Se2#
- 1...Rg5
- 2.f3#
- 1...Rg6
- 2.f3#
- 1...Rg7
- 2.f3#
- 1...Rg8
- 2.f3#
- 1...Bc3
- 2.bxc3#
- 1...Ba5
- 2.b4#
- 1...e3
- 2.fxe3#
- 1...Rxg3+
- 1.Qa1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(e);CHECK,OGATE,P_SPINP(d),XS(H)::B(B)+P(E),XR(e)
- R(e);N_PINS(H)::S(H)
- R(e);N_PINS(H),XR(I)::S(H)
- R(e);P_SPINP(d)::B(B)+P(E)
- B(b);OGATE::P(C),XB(b)
- P(d);N_GUARD,P_SPINR(e),XS(G)::B(B)+P(E)
- P(d);OGATE,P_SPINR(e)::P(E),XP(d)
- Tries
- Try
- K(F);N_SPINS(H),S_FLIGHT
- Threat
- S(H)
- Vars
- R(e);OGATE,P_SPINP(d),XS(H)::B(B)+P(E),XR(e)
- P(d);N_GUARD,P_SPINR(e),XS(G)::B(B)+P(E)
- P(d);OGATE,P_SPINR(e)::P(E),XP(d)
- Refutation
- B(b);
- Try
- R(I);N_SPINS(H),P_PINP(d),XR(e)
- Threat
- DUALS(2)
- Vars
- P(h);N_SPINP(d),XR(I)::S(H)
- Refutation
- B(b);
- Try
- Q(L);P_PINB(b)
- Threat
- QAR2(L),XB(b)
- Vars
- R(e);CHECK,OGATE,P_SPINP(d),XS(H)::B(B)+P(E),XR(e)
- P(d);N_GUARD,P_SPINR(e),XS(G)::B(B)+P(E)
- Refutation
- P(f);N_SPINB(b),XQ(L)
- Try
- Q(L);
- Threat
- QAR2(L),XB(b)
- Vars
- R(e);CHECK,OGATE,P_SPINP(d),XS(H)::B(B)+P(E),XR(e)
- P(d);N_GUARD,P_SPINR(e),XS(G)::B(B)+P(E)
- B(b);OGATE::QAB1(L)
- Refutation
- B(b);XQ(L)
- Try
- P(D);CHECK
- Vars
- K(c);P-FLIGHT,XS(G)::QAR2(L),XP(g)
- Refutation
- B(b);XP(D)
- Try
- Actual
- Q(L);
- Vars
- R(e);CHECK,OGATE,P_SPINP(d),XS(H)::B(B)+P(E),XR(e)
- R(e);N_PINS(H),XR(I)::S(H)
- P(d);N_GUARD,P_SPINR(e),XS(G)::B(B)+P(E)
- B(b);N_GUARD::QAB(L)+P(C)
- B(b);OGATE::QAB(L)+P(C),XB(b)
- R(e);N_PINS(H)::S(H)
- R(e);P_SPINP(d)::B(B)+P(E)
- B(b);OGATE::P(C),XB(b)
- B(b);OGATE::QAB(L)+P(C)
- P(d);OGATE,P_SPINR(e)::P(E),XP(d)
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).