MESON Chess Problem Database
Problem Display
PID: 44832 (1B1R3R/8/3n2K1/2p5/2Pnkp2/2Q5/5P2/8 w - - 0 1)
Stevenson, Edward
Double Pin-Mate after a Black King Move, 1980
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Ke5
- 2.Rde8#
- 2.Rhe8#
- 1...Sc2
- 2.f3#
- 1...Se2
- 2.f3#
- 1...Sb3
- 2.f3#
- 1...S4b5
- 2.f3#
- 1...S4f5
- 2.f3#
- 1...Sc6
- 2.f3#
- 1...Se6
- 2.f3#
- 1...f3
- 2.Qe3#
- 1...Ke5
- Tries
- 1.Bxd6?
- 1...Sc2
- 2.Rde8#
- 2.Rhe8#
- 2.f3#
- 1...Se2
- 2.Rde8#
- 2.Rhe8#
- 2.f3#
- 1...Sb3
- 2.Rde8#
- 2.Rhe8#
- 2.f3#
- 1...Sb5
- 2.Rde8#
- 2.Rhe8#
- 2.f3#
- 1...Sf5
- 2.f3#
- 1...Sc6
- 2.f3#
- 1...Se6
- 2.f3#
- 1...f3
- 2.Rh4#
- 2.Qe3#
- 1...Sf3!
- 1...Sc2
- 1.Rxd6?
- 1...Ke5
- 2.Re8#
- 1...f3
- 2.Qe3#
- 1...Sc2
- 2.Re6#
- 2.Re8#
- 2.f3#
- 1...Se2
- 2.Re6#
- 2.Re8#
- 2.f3#
- 1...Sb3
- 2.Re6#
- 2.Re8#
- 2.f3#
- 1...Sb5
- 2.Re6#
- 2.Re8#
- 2.f3#
- 1...Sf5
- 2.Re6#
- 2.f3#
- 1...Sc6
- 2.f3#
- 1...Se6
- 2.Rxe6#
- 2.f3#
- 1...Sf3!
- 1...Ke5
- 1.Rde8+?
- 1...Se6
- 2.Rxe6#
- 2.f3#
- 1...Sxe8!
- 1...Se6
- 1.Rh3?
- 1...Ke5
- 2.Re8#
- 1...Sxc4
- 2.Qd3#
- 1...f3
- 2.Qe3#
- 1...Sc2
- 2.f3#
- 1...Se2
- 2.f3#
- 1...Sb3
- 2.f3#
- 1...S4b5
- 2.f3#
- 1...S4f5
- 2.f3#
- 1...Sc6
- 2.f3#
- 1...Se6
- 2.f3#
- 1...S6b5
- 2.Qd3#
- 1...S6f5
- 2.Qd3#
- 1...Sb7
- 2.Qd3#
- 1...Sf7
- 2.Qd3#
- 1...Sc8
- 2.Qd3#
- 1...Se8
- 2.Qd3#
- 1...Sf3!
- 1...Ke5
- 1.Rhe8+?
- 1...Se6
- 2.Rxe6#
- 2.f3#
- 1...Sxe8!
- 1...Se6
- 1.f3+?
- 1...Ke5
- 2.Rde8#
- 2.Rhe8#
- 1...Sxf3!
- 1...Ke5
- 1.Bxd6?
- Keys
- 1.Rh4!
- threat
- 2.Qe3#
- 1...Ke5
- 2.Re8#
- 1...Sxc4
- 2.Rxf4#
- 1...Sc2
- 2.f3#
- 1...S4f5
- 2.f3#
- 1...S6f5
- 2.Rxf4#
- threat
- 1.Rh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- S(a);N_GUARD::P(A)
- P(c);N_GUARD::QAR1(B)
- Tries
- Try
- B(E);XS(e)
- Vars
- S(a);N_GUARD::P(A)
- Refutation
- S(a);
- Try
- R(F);XS(e)
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(G)
- P(c);N_GUARD::QAR1(B)
- S(a);N_GUARD::P(A)
- Refutation
- S(a);
- Try
- R(F);CHECK
- Refutation
- S(e);XR(F)
- Try
- R(G);
- Vars
- K(b);P-FLIGHT,P_SPINS(a)::R(F)
- S(e);XP(C)::QAB1(B)
- P(c);N_GUARD::QAR1(B)
- S(a);N_GUARD::P(A)
- S(e);::QAB1(B)
- Refutation
- S(a);
- Try
- R(G);CHECK
- Refutation
- S(e);XR(G)
- Try
- P(A);CHECK
- Refutation
- S(a);XP(A)
- Try
- Actual
- R(G);P_PINP(c)
- Threat
- QAR1(B)
- Vars
- K(b);N_SPINP(c),P-FLIGHT,P_SPINS(a)::R(F)
- S(e);XP(C)::R1(G),XP(c)
- S(a);N_GUARD::P(A)
- S(e);::R1(G),XP(c)
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).