MESON Chess Problem Database
Problem Display
PID: 239103 (8/Q5p1/3p4/3Pb1B1/2RPkPR1/4N3/2P1b1P1/K3N3 w - - 0 1)
Maleika, Gerhard
The Problemist, 1988
#2
12 + 5
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.dxe5#
- 1...Bf1
- 2.fxe5#
- 1...Bd3
- 2.fxe5#
- 1...Bf3
- 2.dxe5#
- 1...Bxc4
- 2.fxe5#
- 1...Bxg4
- 2.dxe5#
- 1...Bxd4+
- 2.Qxd4#
- 1...Bxf4
- 2.Qe7#
- 1...Bd1
- Tries
- 1.Sd3?
- threat
- 2.dxe5#
- 1...Bxd4+
- 2.Qxd4#
- 1...Kxe3
- 2.fxe5#
- 1...Bxd3
- 2.fxe5#
- 1...Bxf4
- 2.Qe7#
- 1...Bf6!
- threat
- 1.f5+?
- 1...Bf4
- 2.Qe7#
- 1...Bxg4!
- 1...Bf4
- 1.Sd3?
- Keys
- 1.Sf3!
- threat
- 2.fxe5#
- 1...Bxd4+
- 2.Qxd4#
- 1...Kxe3
- 2.dxe5#
- 1...Bxf3
- 2.dxe5#
- 1...Bxf4
- 2.Qe7#
- 1...Bf6
- 2.f5#
- threat
- 1.Sf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- B(a);N_GUARD::R(F)+P(G),XB(c)
- B(a);N_GUARD::R(I)+P(H),XB(c)
- B(a);N_GUARD,XR(F)::R(I)+P(H),XB(c)
- B(a);N_GUARD,XR(I)::R(F)+P(G),XB(c)
- B(c);CHECK,OGATE,P_SPINB(c),XP(G)::QAR1(L),XB(c)
- B(c);N_PINP(G),OGATEB,P_SPINB(c),XP(H)::QAR(L)
- Tries
- Try
- S(B);
- Threat
- R(F)+P(G),XB(c)
- Vars
- B(c);CHECK,OGATE,P_SPINB(c),XP(G)::QAR1(L),XB(c)
- K(b);P-FLIGHT,XS(E)::B(K)+P(H),XB(c)
- B(a);N_GUARD,XS(B)::R(I)+P(H),XB(c)
- B(c);N_PINP(G),OGATEB,P_SPINB(c),XP(H)::QAR(L)
- Refutation
- B(c);
- Try
- P(H);CHECK
- Vars
- B(c);N_PINP(G),P_SPINB(c),S_CUTB(a)::QAR(L)
- Refutation
- B(a);XR(I)
- Try
- Actual
- S(B);
- Threat
- R(I)+P(H),XB(c)
- Vars
- B(c);CHECK,OGATE,P_SPINB(c),XP(G)::QAR1(L),XB(c)
- K(b);P-FLIGHT,XS(E)::QAB(L)+P(G),XB(c)
- B(a);N_GUARD,XS(B)::R(F)+P(G),XB(c)
- B(c);N_PINP(G),OGATEB,P_SPINB(c),XP(H)::QAR(L)
- B(c);N_GUARD::R(I)+P(H)
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).