MESON Chess Problem Database
Problem Display
PID: 6073 (N7/p2Q1K1R/k2B1R2/1r6/1Pr2p1n/2pB4/8/5b2 w - - 0 1)
Funk, Jacob E
The Problemist, 1926
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Rcxb4
- 2.Bxb4#
- 1...Rd4
- 2.Qxb5#
- 2.Qc6#
- 2.Qc8#
- 1...Re4
- 2.Be5#
- 2.Qxb5#
- 2.Qc6#
- 2.Qc8#
- 1...Rcc5
- 2.Bxc5#
- 1...Rc6
- 2.Qxc6#
- 1...Rc8
- 2.Qxb5#
- 2.Qxc8#
- 1...Rbxb4
- 2.Bxb4#
- 1...Ra5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qc6#
- 1...Rbc5
- 2.Bxc5#
- 1...Rd5
- 2.Qc6#
- 1...Re5
- 2.Bxe5#
- 2.Qc6#
- 1...Rf5
- 2.Qc6#
- 1...Rg5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qc6#
- 1...Rh5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qc6#
- 1...Rb8
- 2.Bxb8#
- 1...Rcxb4
- Tries
- 1.Kf8?
- threat
- 2.Qxa7#
- 1...Rc8+
- 2.Qxc8#
- 1...Rb8+
- 2.Bxb8#
- 1...Rbxb4
- 2.Bxb4#
- 1...Rc7
- 2.Qxb5#
- 1...Ra5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Qc6#
- 2.Qb7#
- 1...Rbc5
- 2.Bxc5#
- 2.Qb7#
- 1...Rd5
- 2.Qc6#
- 2.Qb7#
- 1...Re5
- 2.Bxe5#
- 2.Qc6#
- 2.Qb7#
- 1...Rf5
- 2.Qc6#
- 2.Qb7#
- 1...Rg5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Qc6#
- 2.Qb7#
- 1...Rh5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Qc6#
- 2.Qb7#
- 1...Rb6
- 2.Qa4#
- 1...Rb7
- 2.Qa4#
- 2.Qxb7#
- 1...Sg6+!
- threat
- 1.Kg8?
- threat
- 2.Qxa7#
- 1...Rc8+
- 2.Qxc8#
- 1...Rb8+
- 2.Bxb8#
- 1...Rbxb4
- 2.Bxb4#
- 1...Rc7
- 2.Qxb5#
- 1...Ra5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qc6#
- 2.Qb7#
- 1...Rbc5
- 2.Bxc5#
- 2.Qb7#
- 1...Rd5
- 2.Qc6#
- 2.Qb7#
- 1...Re5
- 2.Bxe5#
- 2.Qc6#
- 2.Qb7#
- 1...Rf5
- 2.Qc6#
- 2.Qb7#
- 1...Rh5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qc6#
- 2.Qb7#
- 1...Rb6
- 2.Qa4#
- 1...Rb7
- 2.Qa4#
- 2.Qxb7#
- 1...Rg5+!
- threat
- 1.Bxc4?
- threat
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qxb5#
- 2.Qc6#
- 2.Qc8#
- 1...Bg2
- 2.Bxb5#
- 2.Qxb5#
- 1...Bh3
- 2.Bxb5#
- 2.Qxb5#
- 2.Qc6#
- 1...Sf5
- 2.Qxb5#
- 2.Qc6#
- 2.Qc8#
- 1...f3
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qxb5#
- 2.Qc6#
- 2.Qc8#
- 1...Bxc4+!
- threat
- 1.Bxf4+?
- 1...Rc6
- 2.Rxc6#
- 2.Qxc6#
- 2.Qc8#
- 1...Rb6!
- 1...Rc6
- 1.Be5+?
- 1...Rc6
- 2.Rxc6#
- 2.Qxc6#
- 2.Qc8#
- 1...Rb6!
- 1...Rc6
- 1.Be7+?
- 1...Rc6
- 2.Rxc6#
- 2.Qxc6#
- 2.Qc8#
- 1...Rb6!
- 1...Rc6
- 1.Bb8+?
- 1...Rc6
- 2.Rxc6#
- 2.Qxc6#
- 2.Qc8#
- 2.Qxa7#
- 1...Rb6!
- 1...Rc6
- 1.Bf8+?
- 1...Rc6
- 2.Rxc6#
- 2.Qxc6#
- 2.Qc8#
- 1...Rb6!
- 1...Rc6
- 1.Qc6+?
- 1...Rb6
- 2.Sc7#
- 1...Rxc6!
- 1...Rb6
- 1.Kf8?
- Keys
- 1.Ke8!
- threat
- 2.Qxa7#
- 1...Re4+
- 2.Be5#
- 1...Rc8+
- 2.Qxc8#
- 1...Re5+
- 2.Bxe5#
- 1...Rb8+
- 2.Bxb8#
- 1...Rbxb4
- 2.Bxb4#
- 1...Rc7
- 2.Qxb5#
- 1...Ra5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qc6#
- 2.Qb7#
- 1...Rbc5
- 2.Bxc5#
- 2.Qb7#
- 1...Rd5
- 2.Qc6#
- 2.Qb7#
- 1...Rf5
- 2.Qc6#
- 2.Qb7#
- 1...Rg5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qc6#
- 2.Qb7#
- 1...Rh5
- 2.Bxf4#
- 2.Bc5#
- 2.Be5#
- 2.Be7#
- 2.Bb8#
- 2.Bf8#
- 2.Qc6#
- 2.Qb7#
- 1...Rb6
- 2.Qa4#
- 1...Rb7
- 2.Qa4#
- 2.Qxb7#
- threat
- 1.Ke8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- R(c);OGATE,P_SPINR(f),XP(B)::R(D)+B(C),XR(c)
- R(c);P_SPINR(f)::R(D)+B(C),XR(c)
- R(c);N_GUARD,P_SPINR(f)::QAR2(E),XR(c)
- R(f);OGATE,P_SPINR(c),XP(B)::R(D)+B(C),XR(f)
- R(f);N_GUARD,P_SPINR(c)::R(D)+B(C),XR(f)
- R(f);N_GUARD,P_SPINR(c)::QAR2(E)
- R(f);N_GUARD,P_PINR(D),P_SPINR(c)::QAR2(E)
- Tries
- Try
- K(F);P-FLIGHT
- Threat
- QAR1(E),XP(h)
- Vars
- R(c);CHECK,N_GUARD,P_SPINR(f)::QAB(E),XR(c)
- R(f);CHECK,N_GUARD,P_SPINR(c)::R(D)+B(C),XR(f)
- R(f);OGATE,P_SPINR(c),XP(B)::R(D)+B(C),XR(f)
- R(c);P_SPINR(f)::QAB1(E),XR(f)
- R(f);OGATE,P_SPINR(c)::QAR2(E)
- Refutation
- S(e);CHECK
- Try
- K(F);S_FLIGHT
- Threat
- QAR1(E),XP(h)
- Vars
- R(c);CHECK,N_GUARD,P_SPINR(f)::QAB(E),XR(c)
- R(f);CHECK,N_GUARD,P_SPINR(c)::R(D)+B(C),XR(f)
- R(f);OGATE,P_SPINR(c),XP(B)::R(D)+B(C),XR(f)
- R(c);P_SPINR(f)::QAB1(E),XR(f)
- R(f);OGATE,P_SPINR(c)::QAR2(E)
- Refutation
- R(f);CHECK,P_SPINR(c)
- Try
- B(A);P_PINR(f),XR(c)
- Threat
- DUALS(9)
- Refutation
- B(a);CHECK,N_SPINR(f),XB(A)
- Try
- B(C);CHECK,XP(d)
- Refutation
- R(f);P_SPINR(c)
- Try
- B(C);CHECK
- Refutation
- R(f);P_SPINR(c)
- Try
- B(C);CHECK
- Refutation
- R(f);P_SPINR(c)
- Try
- B(C);CHECK
- Refutation
- R(f);P_SPINR(c)
- Try
- B(C);CHECK
- Refutation
- R(f);P_SPINR(c)
- Try
- Q(E);CHECK
- Vars
- R(f);P_SPINR(c)::S(H)
- Refutation
- R(c);P_SPINR(f),XQ(E)
- Try
- Actual
- K(F);S_FLIGHT
- Threat
- QAR1(E),XP(h)
- Vars
- R(c);CHECK,N_GUARD,P_SPINR(f)::R(D)+B(C)
- R(c);CHECK,N_GUARD,P_SPINR(f)::QAB(E),XR(c)
- R(f);CHECK,N_GUARD,P_SPINR(c)::R(D)+B(C),XR(f)
- R(f);OGATE,P_SPINR(c),XP(B)::R(D)+B(C),XR(f)
- R(c);P_SPINR(f)::QAB1(E),XR(f)
- R(f);OGATE,P_SPINR(c)::QAR2(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).