MESON Chess Problem Database
Problem Display
PID: 110273 (8/5p2/p2Nb2K/6n1/k5BR/N1Q5/4q3/8 w - - 0 1)
Leschemelle, Matthieu
Rotenberg, Jacques
Phenix, 1996
#2
6 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Bxd1#
- 1...Qf1
- 2.Bd1#
- 1...Qd3
- 2.Bd1#
- 1...Qc4
- 2.Bd1#
- 1...Qb5
- 2.Bd1#
- 1...Qe1
- 2.Bd1#
- 1...Qa2
- 2.Bd1#
- 1...Qb2
- 2.Bd1#
- 1...Qd2
- 2.Bd1#
- 1...Qf2
- 2.Bd1#
- 1...Qg2
- 2.Bd1#
- 1...Qh2
- 2.Bd1#
- 1...Qe3
- 2.Bd1#
- 1...Qe5
- 2.Bd1#
- 1...Ba2
- 2.Bd7#
- 1...Bc4
- 2.Bd7#
- 1...Bd5
- 2.Bd7#
- 1...Bd7
- 2.Bxd7#
- 1...Bc8
- 2.Bd7#
- 1...Qd1
- Tries
- 1.Sb1?
- threat
- 2.Qa3#
- 1...Qd3
- 2.Bd1#
- 1...Qa2
- 2.Bd1#
- 1...Qb2
- 2.Bd1#
- 1...Qe3
- 2.Bd1#
- 1...Bb3
- 2.Bd7#
- 1...Qf3!
- threat
- 1.Sc2?
- threat
- 2.Qb4#
- 2.Qa3#
- 1...Qxg4
- 2.Qa3#
- 1...Qd3
- 2.Qb4#
- 1...Qf3
- 2.Qb4#
- 1...Qc4
- 2.Qa3#
- 1...Qb5
- 2.Qa3#
- 1...Qe1
- 2.Qa3#
- 1...Qd2
- 2.Qa3#
- 1...Qe3
- 2.Qb4#
- 1...Qe4
- 2.Qa3#
- 1...Bb3
- 2.Bd7#
- 2.Qb4#
- 1...a5
- 2.Qa3#
- 1...Qxc2!
- threat
- 1.Sdc4?
- threat
- 2.Sb6#
- 1...Qxc4
- 2.Bd1#
- 1...Bxc4
- 2.Bd7#
- 1...Qb2
- 2.Sxb2#
- 1...Qe3
- 2.Sb2#
- 2.Bd1#
- 1...Qf2!
- threat
- 1.Sb7?
- threat
- 2.Sc5#
- 1...Bb3
- 2.Qa5#
- 1...Qc4
- 2.Bd1#
- 1...Qb5
- 2.Bd1#
- 1...Qf2
- 2.Bd1#
- 1...Qe3
- 2.Bd1#
- 1...Qe5
- 2.Bd1#
- 1...Se4!
- threat
- 1.Sc8?
- threat
- 2.Sb6#
- 1...Bxc8
- 2.Bd7#
- 1...Qb5
- 2.Bd1#
- 1...Qb2
- 2.Bd1#
- 1...Qf2
- 2.Bd1#
- 1...Qe3
- 2.Bd1#
- 1...Bb3!
- threat
- 1.Bxe2+?
- 1...Bc4
- 2.Bd1#
- 2.Rxc4#
- 1...Bg4
- 2.Bd1#
- 1...Se4!
- 1...Bc4
- 1.Bxe6+?
- 1...Qc4
- 2.Bd7#
- 2.Rxc4#
- 1...Qg4
- 2.Bd7#
- 1...Qe4
- 2.Bd7#
- 1...Se4!
- 1...Qc4
- 1.Sb1?
- Keys
- 1.Sac4!
- threat
- 2.Sb6#
- 2.Qa3#
- 1...Qxc4
- 2.Bd1#
- 1...Bxc4
- 2.Bd7#
- 1...Qd3
- 2.Sb2#
- 2.Sb6#
- 1...Qf3
- 2.Sb2#
- 2.Sb6#
- 1...Qa2
- 2.Sb6#
- 1...Qb2
- 2.Sxb2#
- 1...Qf2
- 2.Qa3#
- 1...Qe3
- 2.Sb2#
- 2.Bd1#
- threat
- 1.Sac4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 14
- Sets
- Q(a);OGATE::R(D)+B(C),DCHECK,XQ(a)
- Q(a);OGATE::R(D)+B(C),DCHECK
- Q(a);OGATE::B(C)
- Q(a);OGATE,P_PINR(D)::R(D)+B(C),DCHECK
- B(e);OGATE::R(D)+B(C),DCHECK
- B(e);OGATE::B(C)
- B(e);OGATE::R(D)+B(C),DCHECK,XB(e)
- Tries
- Try
- S(A);
- Threat
- QAR1(B)
- Vars
- Q(a);OGATE::R(D)+B(C),DCHECK
- B(e);OGATE::R(D)+B(C),DCHECK
- Refutation
- Q(a);
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- Q(a);P_SPINQ(a),XB(C)::QAR1(B)
- Q(a);::QAR1(B)
- P(d);SBLOCK::QAR1(B)
- Refutation
- Q(a);XS(A)
- Try
- S(E);
- Threat
- S(E)
- Vars
- Q(a);OGATE,XS(E)::B(C)
- B(e);OGATE,XS(E)::B(C)
- Q(a);N_GUARD::S(E),XQ(a)
- Refutation
- Q(a);
- Try
- S(E);
- Threat
- S(E)
- Vars
- B(e);SBLOCK::QAR1(B)
- Q(a);OGATE::B(C)
- Q(a);OGATE::R(D)+B(C),DCHECK
- Refutation
- S(c);
- Try
- S(E);
- Threat
- S(E)
- Vars
- B(e);OGATE,XS(E)::R(D)+B(C),DCHECK
- Q(a);OGATE::R(D)+B(C),DCHECK
- Refutation
- B(e);
- Try
- B(C);CHECK,XQ(a)
- Vars
- B(e);P_SPINB(e)::B(C)
- Refutation
- S(c);P_SPINS(c)
- Try
- B(C);CHECK,XB(e)
- Vars
- Q(a);P_SPINQ(a)::B(C)
- Refutation
- S(c);P_SPINS(c)
- Try
- Actual
- S(A);
- Threat
- DUALS(2)
- Vars
- Q(a);OGATE,XS(A)::B(C)
- B(e);OGATE,XS(A)::B(C)
- Q(a);::S(A)
- Q(a);N_GUARD::S(A),XQ(a)
- Q(a);::QAR1(B)
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).