MESON Chess Problem Database
Problem Display
PID: 264928 (5r1q/4P1n1/Q5b1/4BkP1/8/4KN1P/6B1/8 w - - 0 1)
Bouchez, Laurent
di Scala, Pascal
The Problemist, 1993
#2
8 + 5
SOLUTION
- SOUND
- Sets
- 1...Qxh3
- 2.Bxh3#
- 1...Rf6
- 2.Qxf6#
- 1...Ra8
- 2.Qf6#
- 1...Rb8
- 2.Qf6#
- 1...Rc8
- 2.Qf6#
- 1...Rd8
- 2.Qf6#
- 1...Re8
- 2.Qf6#
- 1...Rg8
- 2.Qf6#
- 1...Bf7
- 2.Qf6#
- 1...Se6
- 2.Qd3#
- 1...Se8
- 2.Qc8#
- 1...Qxh3
- Tries
- 1.Bf1?
- threat
- 2.Bd3#
- 1...Qxh3
- 2.Bxh3#
- 1...Rd8
- 2.Qf6#
- 1...Qh4!
- threat
- 1.Qc8+?
- 1...Se6
- 2.Qc2#
- 1...Rxc8!
- 1...Se6
- 1.exf8Q+?
- 1...Bf7
- 2.Qf6#
- 2.Qxf7#
- 1...Qxf8!
- 1...Bf7
- 1.exf8S?
- threat
- 2.Qd3#
- 2.Qf6#
- 2.Qxg6#
- 1...Qxh3
- 2.Bxh3#
- 1...Qh4
- 2.Qf6#
- 2.Qxg6#
- 1...Qh5
- 2.Qd3#
- 2.Qf6#
- 1...Qh6
- 2.Qd3#
- 2.Qf6#
- 1...Qh7
- 2.Qd3#
- 2.Qf6#
- 1...Bh5
- 2.Qd3#
- 2.Qf6#
- 1...Bf7
- 2.Qd3#
- 2.Qf6#
- 1...Bh7
- 2.Qd3#
- 2.Qf6#
- 1...Be8
- 2.Qd3#
- 2.Qf6#
- 1...Sh5
- 2.Qd3#
- 2.Qc8#
- 2.Qe6#
- 2.Qxg6#
- 1...Se6
- 2.Qd3#
- 2.Qxe6#
- 1...Se8
- 2.Qd3#
- 2.Qc8#
- 2.Qe6#
- 2.Qxg6#
- 1...Qxf8!
- threat
- 1.exf8B?
- threat
- 2.Qf6#
- 1...Qxh3
- 2.Bxh3#
- 1...Sh5
- 2.Qc8#
- 1...Se6
- 2.Qd3#
- 1...Se8
- 2.Qc8#
- 1...Qxf8!
- threat
- 1.exf8R+?
- 1...Bf7
- 2.Rxf7#
- 2.Qf6#
- 1...Qxf8!
- 1...Bf7
- 1.e8Q?
- threat
- 2.Qd3#
- 2.Qexg6#
- 2.Qaxg6#
- 1...Qxh3
- 2.Bxh3#
- 1...Rxe8
- 2.Qf6#
- 1...Sxe8
- 2.Qc8#
- 1...Qh4
- 2.Qexg6#
- 2.Qaxg6#
- 1...Qh5
- 2.Qd3#
- 1...Qh6
- 2.Qd3#
- 1...Qh7
- 2.Qd3#
- 1...Rf6
- 2.Qd3#
- 2.Qxf6#
- 1...Rf7
- 2.Qd3#
- 1...Bh5
- 2.Qd3#
- 1...Bf7
- 2.Qd3#
- 2.Qf6#
- 1...Bh7
- 2.Qd3#
- 1...Se6
- 2.Qd3#
- 2.Qaxe6#
- 2.Qexe6#
- 1...Bxe8!
- threat
- 1.Bf1?
- Keys
- 1.Bf4!
- threat
- 2.Sd4#
- 1...Qxh3
- 2.Bxh3#
- 1...Rd8
- 2.Qf6#
- 1...Sh5
- 2.Sh4#
- 1...Se6
- 2.Qd3#
- 1...Se8
- 2.Qc8#
- threat
- 1.Bf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(e);OGATE,P_PINS(C),XP(D)::B(A),XQ(e)
- R(d);N_GUARD::QAR1(G),XR(d)
- R(d);N_GUARD::QAR1(G)
- B(b);S_CUTR(d)::QAR1(G)
- S(c);SBLOCK::QAB(G)
- S(c);N_GUARD,S_CUTR(d)::QAB(G)
- Tries
- Try
- B(A);
- Threat
- B(A)
- Vars
- Q(e);OGATE,P_PINS(C),XP(D)::B(A),XQ(e)
- R(d);N_GUARD::QAR1(G)
- Refutation
- Q(e);
- Try
- Q(G);CHECK
- Vars
- S(c);P_SPINS(c),SBLOCK::QAB(G)
- Refutation
- R(d);XQ(G)
- Try
- P(H);CHECK,XR(d)
- Refutation
- Q(e);XQ(H)
- Try
- P(H);XR(d)
- Threat
- DUALS(3)
- Vars
- Q(e);OGATE,P_PINS(C),XP(D)::B(A),XQ(e)
- Refutation
- Q(e);XS(H)
- Try
- P(H);XR(d)
- Threat
- QAR1(G)
- Vars
- Q(e);OGATE,P_PINS(C),XP(D)::B(A),XQ(e)
- S(c);N_GUARD::QAB(G)
- S(c);SBLOCK::QAB(G)
- Refutation
- Q(e);XB(H)
- Try
- P(H);CHECK,XR(d)
- Refutation
- Q(e);XR(H)
- Try
- P(H);
- Threat
- DUALS(3)
- Vars
- Q(e);OGATE,P_PINS(C),XP(D)::B(A),XQ(e)
- R(d);N_GUARD,P_PINB(E),XQ(H)::QAR1(G)
- S(c);N_GUARD,XQ(H)::QAB(G)
- Q(e);::QAB(G)
- Q(e);P_PINP(F)::QAB(G)
- R(d);::QAB(G)
- B(b);::QAB(G)
- Refutation
- B(b);XQ(H)
- Try
- Actual
- B(E);
- Threat
- S(C)
- Vars
- Q(e);OGATE,P_PINS(C),XP(D)::B(A),XQ(e)
- R(d);N_GUARD::QAR1(G)
- S(c);S_CUTQ(e)::S(C)
- S(c);SBLOCK::QAB(G)
- S(c);N_GUARD,S_CUTR(d)::QAB(G)
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).