MESON Chess Problem Database
Problem Display
PID: 12101 (4K1N1/8/5p1r/1Q1R1p1p/3NknnR/5qPb/B2P2P1/5rB1 w - - 0 1)
Quack, Godfrey C
The Problemist, 1974
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.gxf3#
- 1...Rb1
- 2.gxf3#
- 1...Rc1
- 2.gxf3#
- 1...Rd1
- 2.gxf3#
- 1...Re1
- 2.gxf3#
- 1...Rxg1
- 2.gxf3#
- 1...Sg6
- 2.Sxf6#
- 1...Sf2
- 2.gxf3#
- 1...Se3
- 2.d3#
- 1...Ra1
- Tries
- 1.Sxf3?
- threat
- 2.Rd4#
- 2.Qa4#
- 2.Qc4#
- 2.Qb4#
- 1...Sxg2
- 2.Qd3#
- 1...Sxd5
- 2.Bxd5#
- 2.Qc4#
- 2.Qxd5#
- 2.d3#
- 1...Rb1
- 2.Rd4#
- 2.Qc4#
- 1...Rc1
- 2.Rd4#
- 1...Se2
- 2.Qxe2#
- 2.Qd3#
- 2.d3#
- 1...Sd3
- 2.Rd4#
- 2.Qxd3#
- 2.Qc4#
- 1...Se6
- 2.Qe2#
- 2.Qd3#
- 2.d3#
- 1...Se3
- 2.Rxf4#
- 2.Rd4#
- 2.Qd3#
- 2.d3#
- 1...Se5
- 2.Rxf4#
- 2.Rd4#
- 2.Qe2#
- 1...Bxg2!
- threat
- 1.Sxf5?
- threat
- 2.Sd6#
- 2.Rd4#
- 2.Qa4#
- 2.Qc4#
- 2.Qb4#
- 1...Sxd5
- 2.Qxd5#
- 1...Se5
- 2.Sd6#
- 1...Qd1
- 2.Sd6#
- 2.Rd4#
- 2.Qc4#
- 2.Qb4#
- 1...Qe2
- 2.Sd6#
- 2.Rd4#
- 1...Qf2
- 2.Sd6#
- 1...Qa3
- 2.Rd4#
- 2.Qc4#
- 1...Qb3
- 2.Sd6#
- 2.Rd4#
- 1...Qc3
- 2.Sd6#
- 1...Qd3
- 2.Sd6#
- 1...Qe3
- 2.Sd6#
- 1...Rb1
- 2.Sd6#
- 2.Rd4#
- 2.Qc4#
- 1...Rc1
- 2.Sd6#
- 2.Rd4#
- 1...Se2
- 2.Sd6#
- 1...Sd3
- 2.Sd6#
- 2.Rd4#
- 2.Qc4#
- 1...Se6
- 2.Sd6#
- 1...Se3
- 2.Sd6#
- 2.Rd4#
- 2.Qd3#
- 2.d3#
- 1...Qxg2!
- threat
- 1.Re5+?
- 1...Sxe5
- 2.Bd5#
- 1...fxe5!
- 1...Sxe5
- 1.Sxf3?
- Keys
- 1.Rd6!
- threat
- 2.Qxf5#
- 1...Sxg2
- 2.Re6#
- 1...Sd5
- 2.Re6#
- 1...Se2
- 2.Re6#
- 1...Sd3
- 2.Qd5#
- 1...Se6
- 2.Rxe6#
- 1...Sg6
- 2.Sxf6#
- 1...Sf2
- 2.gxf3#
- 1...Sh2
- 2.Re6#
- 1...Se3
- 2.d3#
- 1...Se5
- 2.Bd5#
- threat
- 1.Rd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::P(D),XQ(b)
- R(a);N_GUARD,XB(A)::P(D),XQ(b)
- S(e);P_SPINS(f),S_CUTR(j)::S(K),XP(i)
- S(f);P_SPINS(e),S_CUTR(a)::P(D),XQ(b)
- S(f);P_SPINS(e),S_CUTQ(b)::P(C)
- Tries
- Try
- S(F);XQ(b)
- Threat
- DUALS(4)
- Vars
- S(e);N_GUARD,P_SPINS(f),XP(D)::QAB1(H)
- R(a);::R1(I)
- Refutation
- B(c);XP(D)
- Try
- S(F);XP(g)
- Threat
- DUALS(5)
- Vars
- S(e);OGATE,P_SPINS(f),XR(I)::QAB1(H),XS(e)
- S(f);P_SPINS(e)::S(F)
- Q(b);::S(F)
- S(e);P_SPINS(f)::S(F)
- Refutation
- Q(b);XP(D)
- Try
- R(I);CHECK
- Vars
- S(f);P_SPINS(e),SBLOCK,XR(I)::B(B)
- Refutation
- P(i);XR(I)
- Try
- Actual
- R(I);
- Threat
- QAB1(H),XP(g)
- Vars
- S(e);N_GUARD,P_SPINS(f),XP(D)::R(I)
- S(e);N_GUARD,P_SPINS(f)::R(I)
- S(e);N_GUARD,P_SPINS(f),SBLOCK::QAB1(H)
- S(e);N_GUARD,P_SPINS(f)::R(I),XS(e)
- S(e);P_SPINS(f),S_CUTR(j)::S(K),XP(i)
- S(f);P_SPINS(e),S_CUTR(a)::P(D),XQ(b)
- S(f);N_GUARD,P_SPINS(e)::R(I)
- S(f);P_SPINS(e),S_CUTQ(b)::P(C)
- S(f);P_SPINS(e),SBLOCK::B(B)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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