MESON Chess Problem Database
Problem Display
PID: 7900 (Q7/3ppb1r/5k1P/qp6/3P1N1P/7n/4R3/1B2bK2 w - - 0 1)
Buglos, Janos
Comm., Schach, 1994
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Rh8
- 2.Qxh8#
- 1...Rh8
- Tries
- 1.Qf3?
- threat
- 2.Sxh3#
- 2.Sd5#
- 2.Sh5#
- 1...Rxh6
- 2.Sh5#
- 1...Bxh4
- 2.Sxh3#
- 1...Sxf4
- 2.Qxf4#
- 1...Bd5
- 2.Sxd5#
- 2.Sh5#
- 1...Bh5
- 2.Sd5#
- 2.Sxh5#
- 1...Be6
- 2.Sd5#
- 2.Sh5#
- 1...Bg6
- 2.Sd5#
- 2.Sh5#
- 1...e6
- 2.Sd5#
- 1...Qd2
- 2.Sd5#
- 2.Sh5#
- 1...Qc3
- 2.Sd5#
- 2.Sh5#
- 1...Qc7
- 2.Sd5#
- 2.Sh5#
- 1...Qa3
- 2.Sd5#
- 2.Sh5#
- 1...Qa8
- 2.Sd5#
- 2.Sh5#
- 1...Bd2
- 2.Sd5#
- 2.Sh5#
- 1...Bg3
- 2.Sd5#
- 2.Sh5#
- 1...Sg1
- 2.Sd5#
- 2.Sh5#
- 1...Sf2
- 2.Sg2#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 1...Sg5
- 2.Sd5#
- 2.Sh5#
- 1...b4
- 2.Sd5#
- 2.Sh5#
- 1...d5
- 2.Sxh3#
- 2.Sxd5#
- 2.Sh5#
- 1...e5!
- threat
- 1.Qe4?
- threat
- 2.Qf5#
- 2.Qe5#
- 2.Qxe7#
- 1...Rxh6
- 2.Qe5#
- 1...Ba2
- 2.Qf5#
- 2.Qg6#
- 1...Bb3
- 2.Qf5#
- 2.Qg6#
- 1...Bc4
- 2.Qf5#
- 2.Qg6#
- 1...Bd5
- 2.Qf5#
- 2.Qg6#
- 1...Bh5
- 2.Qf5#
- 1...Be6
- 2.Qg6#
- 1...Bg6
- 2.Qxg6#
- 1...Be8
- 2.Qf5#
- 1...Bg8
- 2.Qf5#
- 2.Qg6#
- 1...e5
- 2.Qxe5#
- 1...Qb4
- 2.Qf5#
- 2.Qe5#
- 1...Qc7
- 2.Qf5#
- 2.Qxe7#
- 1...Qd8
- 2.Qf5#
- 2.Qe5#
- 1...Qa3
- 2.Qf5#
- 2.Qe5#
- 1...Bb4
- 2.Qf5#
- 2.Qe5#
- 1...b4
- 2.Qxe7#
- 1...d6
- 2.Qf5#
- 2.Qxe7#
- 1...e6!
- threat
- 1.Qh8+?
- 1...Rg7
- 2.Qxg7#
- 1...Rxh8!
- 1...Rg7
- 1.Qf3?
- Keys
- 1.Qf8!
- threat
- 2.Sd5#
- 2.Sh5#
- 2.Qxe7#
- 1...Rxh6
- 2.Sd5#
- 1...Bxh4
- 2.Qxe7#
- 1...Sxf4
- 2.Qxe7#
- 1...Qb4
- 2.Sd5#
- 2.Sh5#
- 1...Qd8
- 2.Sd5#
- 2.Sh5#
- 1...Qa2
- 2.Sh5#
- 2.Qxe7#
- 1...Qa3
- 2.Sd5#
- 2.Sh5#
- 1...Qa8
- 2.Sh5#
- 2.Qxe7#
- 1...Bb4
- 2.Sd5#
- 2.Sh5#
- 1...b4
- 2.Qxe7#
- 1...d5
- 2.Sxd5#
- 2.Sh5#
- 2.Re6#
- 2.Qxe7#
- 1...e5
- 2.dxe5#
- 1...e6
- 2.Sh5#
- threat
- 1.Qf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- R(i);N_GUARD::QAB(H),XR(i)
- Tries
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- R(i);XP(G)::QAR(H)+S(E),DCHECK
- B(a);XP(F)::QAR(H)+S(E),XS(b)
- S(b);OGATE,P_SPINS(b),XS(E)::QAR2(H),XS(b)
- P(g);::QAR(H)+S(E),DCHECK
- Refutation
- P(g);
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- R(i);XP(G)::QAB1(H)
- B(h);::QAR1(H)
- B(h);N_GUARD::QAR1(H)
- B(h);N_GUARD::QAR1(H),XB(h)
- P(g);::QAB1(H),XP(g)
- P(d);::QAB1(H),XP(g)
- Refutation
- P(g);
- Try
- Q(H);CHECK
- Vars
- R(i);N_GUARD,P_SPINR(i)::QAB1(H),XR(i)
- Refutation
- R(i);XQ(H)
- Try
- Actual
- Q(H);P_PINB(h)
- Threat
- DUALS(3)
- Vars
- R(i);XP(G)::S(E)
- B(a);XP(F)::QAB1(H),XP(g)
- S(b);XS(E)::QAB1(H),XP(g)
- P(d);::QAB1(H),XP(g)
- P(g);OGATE::P(D),XP(g)
- P(g);::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).