MESON Chess Problem Database
Problem Display
PID: 238943 (8/bNn2P2/q1pr1p2/2pk4/p5R1/1b1p3K/2P2PN1/B3RQ2 w - - 0 1)
Petite, Efren
Problemas, 1991
#2
10 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxb7
- 2.Qxd3#
- 1...Qa5
- 2.Qxd3#
- 1...Qb6
- 2.Qxd3#
- 1...Bc4
- 2.Sf4#
- 1...Se6
- 2.Se3#
- 1...dxc2
- 2.Sf4#
- 1...d2
- 2.Sf4#
- 1...c4
- 2.Sf4#
- 1...f5
- 2.Re5#
- 1...Qxb7
- Tries
- 1.Re7?
- threat
- 2.Se3#
- 1...c4
- 2.Sf4#
- 1...Re6!
- threat
- 1.cxb3?
- threat
- 2.Sf4#
- 1...Qc4
- 2.bxc4#
- 1...Se6
- 2.Se3#
- 1...axb3!
- threat
- 1.cxd3?
- threat
- 2.Sf4#
- 1...Qxd3+
- 2.Qxd3#
- 1...Se6
- 2.Se3#
- 1...Qc4!
- threat
- 1.c4+?
- 1...Bxc4
- 2.Sf4#
- 1...Qxc4!
- 1...Bxc4
- 1.f8S?
- threat
- 2.Se3#
- 1...c4
- 2.Sf4#
- 1...Re6!
- threat
- 1.Re7?
- Keys
- 1.Qh1!
- threat
- 2.Sh4#
- 1...Qc4
- 2.Sf4#
- 1...Re6
- 2.Se3#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(f);N_GUARD,XS(I)::QAR2(C),XP(b)
- Q(f);N_GUARD::QAR2(C),XP(b)
- B(a);SBLOCK::S(F)
- S(k);SBLOCK::S(F)
- P(b);XP(D)::S(F)
- P(b);::S(F)
- P(d);SBLOCK::S(F)
- P(i);N_GUARD::R1(B)
- Tries
- Try
- R(B);
- Threat
- S(F)
- Vars
- P(d);SBLOCK::S(F)
- Refutation
- R(h);
- Try
- P(D);XB(a)
- Threat
- S(F)
- Vars
- Q(f);OGATE::P(D),XQ(f)
- S(k);SBLOCK::S(F)
- Refutation
- P(c);XP(D)
- Try
- P(D);XP(b)
- Threat
- S(F)
- Vars
- Q(f);CHECK,OGATE,XP(D)::QAR2(C),XQ(f)
- S(k);SBLOCK::S(F)
- Refutation
- Q(f);
- Try
- P(D);CHECK
- Vars
- B(a);SBLOCK,XP(D)::S(F)
- Refutation
- Q(f);XP(D)
- Try
- P(J);
- Threat
- S(F)
- Vars
- P(d);SBLOCK::S(F)
- Refutation
- R(h);
- Try
- Actual
- Q(C);
- Threat
- QAB(C)+S(F)
- Vars
- Q(f);SBLOCK::QAB(C)+S(F),DCHECK
- R(h);SBLOCK::QAB(C)+S(F),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).