MESON Chess Problem Database
Problem Display
PID: 209498 (QK3R2/1NP2B2/p6r/1p1NR2P/3P4/b4kBP/5Pbn/2rn4 w - - 0 1)
Haring, Jacobus
The Problemist, 1985
#2
13 + 9
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Bg6#
- 1...Rxh5
- 2.Bxh5#
- 1...Rd6
- 2.Be6#
- 1...Bb2
- 2.Bg6#
- 1...Sb2
- 2.Re3#
- 1...Sxf2
- 2.Re3#
- 1...Sc3
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...b4
- 2.Bg6#
- 1...Rc5
- Tries
- 1.Sf6?
- threat
- 2.Sc5#
- 2.Bd5#
- 1...Rxc7
- 2.Bd5#
- 1...Rxf6
- 2.Bd5#
- 1...Se3
- 2.Rxe3#
- 1...Rc5
- 2.Sxc5#
- 1...Rc6
- 2.Bd5#
- 1...Bc5
- 2.Sa5#
- 2.Sxc5#
- 2.Sd6#
- 2.Sd8#
- 2.Bd5#
- 1...Sc3
- 2.Re3#
- 1...Sxf2!
- threat
- 1.Sd6?
- threat
- 2.Sc3#
- 2.Bg6#
- 1...Rxc7
- 2.Sxc7#
- 1...Rxh5
- 2.Sc3#
- 2.Bxh5#
- 1...Rxd6
- 2.Be6#
- 1...Bxd6
- 2.Sc3#
- 1...Sxf2
- 2.Re3#
- 1...Bf1
- 2.Sc3#
- 1...Bh1
- 2.Sc3#
- 1...Se3
- 2.Rxe3#
- 1...Rc3
- 2.Sxc3#
- 2.Bg6#
- 1...Rc4
- 2.Bg6#
- 1...Rc5
- 2.Bg6#
- 1...Rc6
- 2.Bg6#
- 1...Re6
- 2.Sc3#
- 2.Bxe6#
- 1...Rf6
- 2.Sc3#
- 1...Rg6
- 2.Sc3#
- 2.Bxg6#
- 1...Rh7
- 2.Sc3#
- 1...Rh8
- 2.Sc3#
- 2.Bg8#
- 1...Sc3
- 2.Sxc3#
- 2.Bg6#
- 2.Re3#
- 1...Sg4
- 2.Sc3#
- 1...Bxh3!
- threat
- 1.Be6+?
- 1...Rf6
- 2.Rxf6#
- 1...Bxf8!
- 1...Rf6
- 1.Be8+?
- 1...Rf6
- 2.Rxf6#
- 1...Bxf8!
- 1...Rf6
- 1.Bg8+?
- 1...Rf6
- 2.Rxf6#
- 1...Bxf8!
- 1...Rf6
- 1.Sf6?
- Keys
- 1.Sc5!
- threat
- 2.Sf6#
- 2.Bg6#
- 1...Rb6+
- 2.Sxb6#
- 1...Rxc5
- 2.Bg6#
- 1...Rxh5
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 2.Bxh5#
- 1...Bxh3
- 2.Sf6#
- 1...Bxc5
- 2.Sf6#
- 1...Sxf2
- 2.Re3#
- 1...Bf1
- 2.Sf6#
- 1...Bh1
- 2.Sf6#
- 1...Se3
- 2.Rxe3#
- 1...Rc6
- 2.Be6#
- 1...Rd6
- 2.Be6#
- 1...Re6
- 2.Bxe6#
- 1...Rf6
- 2.Sxf6#
- 1...Rg6
- 2.Sf6#
- 2.Bxg6#
- 1...Rh7
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 1...Rh8
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 2.Bg8#
- 1...Sc3
- 2.Bg6#
- 2.Re3#
- 1...Sg4
- 2.Sf6#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 5
- Sets
- R(a);S_CUTB(e)::R(M)+B(J)
- R(i);OGATE,XP(G)::R(M)+B(J),DCHECK,XR(i)
- R(i);N_GUARD,S_CUTB(e)::R(M)+B(J)
- B(e);N_GUARD::R(M)+B(J)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD,XP(A)::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- P(g);S_CUTB(e)::R(M)+B(J)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);XP(I)::B(J)
- R(i);XS(E)::B(J)
- S(b);N_GUARD::R1(F),XS(b)
- R(a);::QAB(K)+S(H),XR(a)
- R(a);::B(J)
- S(b);N_GUARD::R1(F)
- Refutation
- S(b);XP(A)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- R(a);XP(I)::QAB(K)+S(E),XR(a)
- R(i);N_GUARD,XS(H)::R(M)+B(J)
- B(e);P_PINP(I),XS(H)::QAB(K)+S(E)
- S(b);N_GUARD,XP(A)::R1(F)
- B(c);::QAB(K)+S(E)
- S(b);N_GUARD::R1(F),XS(b)
- R(a);::R(M)+B(J)
- R(i);::QAB(K)+S(E)
- S(d);::QAB(K)+S(E)
- Refutation
- B(c);XP(C)
- Try
- B(J);CHECK
- Vars
- R(i);N_GUARD,P_SPINR(i)::R(M),XR(i)
- Refutation
- B(e);XR(M)
- Try
- B(J);CHECK
- Vars
- R(i);N_GUARD,P_SPINR(i)::R(M),XR(i)
- Refutation
- B(e);XR(M)
- Try
- B(J);CHECK
- Vars
- R(i);N_GUARD,P_SPINR(i)::R(M),XR(i)
- Refutation
- B(e);XR(M)
- Try
- Actual
- S(H);
- Threat
- DUALS(2)
- Vars
- R(i);CHECK,N_GUARD::QAB(K)+S(E),XR(i)
- R(a);XS(H)::R(M)+B(J)
- B(c);XP(C)::QAB(K)+S(E)
- B(e);XS(H)::QAB(K)+S(E)
- S(b);N_GUARD,XP(A)::R1(F)
- B(c);::QAB(K)+S(E)
- S(b);N_GUARD::R1(F),XS(b)
- R(i);N_GUARD::R(M)+B(J)
- R(i);N_GUARD::R(M)+B(J),XR(i)
- R(i);::QAB(K)+S(E),XR(i)
- S(d);::QAB(K)+S(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).