MESON Chess Problem Database
Problem Display
PID: 210883 (2r5/1pbp1Bp1/6K1/2BR1P2/2kN1QN1/2ppP3/n1P5/3n1r2 w - - 0 1)
Haring, Jacobus
The Problemist, 1985
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Ba5
- 2.Se5#
- 1...Be5
- 2.Sxe5#
- 1...Bb6
- 2.Se5#
- 1...Bd6
- 2.Re5#
- 1...Bd8
- 2.Se5#
- 1...Sxe3
- 2.Sxe3#
- 1...dxc2
- 2.Qxf1#
- 1...d2
- 2.Qxf1#
- 1...Ba5
- Tries
- 1.Sb5+?
- 1...Rxf4
- 2.Sa3#
- 1...Bxf4
- 2.Sa3#
- 1...Kxb5!
- 1...Rxf4
- 1.Ba3?
- threat
- 2.Rc5#
- 2.Rd6#
- 2.Rxd7#
- 1...Sxe3
- 2.Sxe3#
- 2.Rc5#
- 1...dxc2
- 2.Qxf1#
- 1...Re8
- 2.Rc5#
- 2.Qxc7#
- 1...Rf8
- 2.Rc5#
- 2.Qxc7#
- 1...Bd6
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Re5#
- 2.Rxd6#
- 1...d6
- 2.Sf3#
- 2.Rc5#
- 2.Rxd6#
- 1...Sb4!
- threat
- 1.Bd6?
- threat
- 2.Sf3#
- 2.Se5#
- 2.Ra5#
- 2.Rb5#
- 2.Re5#
- 1...Rxf4
- 2.Se5#
- 2.Ra5#
- 2.Rb5#
- 2.Re5#
- 1...Bxd6
- 2.Rb5#
- 1...Sxe3
- 2.Sf3#
- 2.Sxe3#
- 2.Se5#
- 1...dxc2
- 2.Se5#
- 2.Qxf1#
- 1...Rg1
- 2.Se2#
- 2.Sb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Ra5#
- 2.Rb5#
- 2.Re5#
- 1...Rf3
- 2.Sxf3#
- 2.Se5#
- 2.Ra5#
- 2.Rb5#
- 2.Re5#
- 1...Rf8
- 2.Sf3#
- 2.Se5#
- 1...Ba5
- 2.Sf3#
- 2.Se5#
- 2.Rxa5#
- 2.Rb5#
- 2.Re5#
- 1...Bb6
- 2.Se5#
- 2.Ra5#
- 2.Rb5#
- 2.Re5#
- 1...Sf2
- 2.Se5#
- 2.Ra5#
- 2.Rb5#
- 2.Re5#
- 1...Sb4
- 2.Sf3#
- 2.Se5#
- 2.Rc5#
- 1...b5
- 2.Sf3#
- 2.Se5#
- 2.Rxb5#
- 2.Re5#
- 1...Re8!
- threat
- 1.Bf8?
- threat
- 2.Rxd7#
- 1...Sxe3
- 2.Sxe3#
- 1...dxc2
- 2.Qxf1#
- 1...Bd6
- 2.Rb5#
- 1...d6
- 2.Sf3#
- 1...Re8
- 2.Qxc7#
- 1...Sb4
- 2.Rc5#
- 1...Rxf8!
- threat
- 1.Qd6?
- threat
- 2.Se5#
- 2.Re5#
- 1...Rxf5
- 2.Rxf5#
- 1...Bxd6
- 2.Re5#
- 1...Sxe3
- 2.Sxe3#
- 2.Se5#
- 1...dxc2
- 2.Se5#
- 1...Rg1
- 2.Re5#
- 1...Rf8
- 2.Se5#
- 1...Sb4
- 2.Se5#
- 1...Re8!
- threat
- 1.Qxc7?
- threat
- 2.Se5#
- 2.Rd6#
- 2.Rxd7#
- 1...Rxc7
- 2.Se5#
- 1...Sxe3
- 2.Sxe3#
- 2.Se5#
- 1...dxc2
- 2.Se5#
- 1...Re8
- 2.Ba3#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Rg1
- 2.Rd6#
- 2.Rxd7#
- 1...Rf8
- 2.Se5#
- 2.Ba3#
- 2.Bd6#
- 2.Be7#
- 2.Bxf8#
- 1...Sb4
- 2.Se5#
- 1...d6
- 2.Rxd6#
- 1...Rxf5!
- threat
- 1.Sb5+?
- Keys
- 1.Be7!
- threat
- 2.Rxd7#
- 1...Sxe3
- 2.Sxe3#
- 1...dxc2
- 2.Qxf1#
- 1...Bd6
- 2.Rb5#
- 1...d6
- 2.Sf3#
- 1...Rf8
- 2.Qxc7#
- 1...Sb4
- 2.Rc5#
- threat
- 1.Be7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- B(h);N_GUARD::S(E)
- B(h);N_GUARD::S(E),XB(h)
- B(h);S_CUTP(i)::B(J)+R(G)
- S(a);XP(B)::S(E),XS(a)
- P(e);OGATEB,XP(A)::QAB(D),XR(b)
- P(e);OGATEB::QAB(D),XR(b)
- Tries
- Try
- S(C);CHECK
- Vars
- R(b);XQ(D)::S(C)
- B(h);XQ(D)::S(C)
- Refutation
- K(f);S_FLIGHT,XS(C)
- Try
- B(F);
- Threat
- DUALS(3)
- Vars
- P(e);OGATEB,XP(A)::QAB(D),XR(b)
- Refutation
- S(c);
- Try
- B(F);
- Threat
- DUALS(5)
- Vars
- B(h);XB(F)::B(J)+R(G)
- Refutation
- R(k);
- Try
- B(F);
- Threat
- B(J)+R(G),XP(i)
- Vars
- S(a);XP(B)::S(E),XS(a)
- P(e);OGATEB,XP(A)::QAB(D),XR(b)
- B(h);S_CUTP(i)::B(J)+R(G)
- P(i);S_CUTB(h)::QAR(D)+S(C)
- R(k);N_GUARD::QAR(D),XB(h)
- S(c);SBLOCK::B(J)+R(G),DCHECK
- Refutation
- R(k);XB(F)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,XP(H)::B(J)+R(G),XR(b)
- B(h);XQ(D)::B(J)+R(G)
- P(e);XP(A)::S(E)
- R(b);P_PINS(E)::B(J)+R(G)
- R(k);::S(E)
- S(c);::S(E)
- Refutation
- R(k);
- Try
- Q(D);XB(h)
- Threat
- DUALS(3)
- Vars
- R(k);XQ(D)::S(E)
- P(e);XP(A)::S(E)
- S(c);::S(E)
- P(i);::B(J)+R(G),XP(i)
- Refutation
- R(b);XP(H)
- Try
- Actual
- B(F);
- Threat
- B(J)+R(G),XP(i)
- Vars
- S(a);XP(B)::S(E),XS(a)
- P(e);OGATEB,XP(A)::QAB(D),XR(b)
- B(h);S_CUTP(i)::B(J)+R(G)
- P(i);S_CUTB(h)::QAR(D)+S(C)
- R(k);N_GUARD::QAR(D),XB(h)
- S(c);SBLOCK::B(J)+R(G),DCHECK
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).