MESON Chess Problem Database
Problem Display
PID: 248660 (4K3/3p4/R1bN3P/2BkN3/3P4/4Q2B/3n1P2/4q3 w - - 0 1)
Leroy, Dominique
Het Belgisch Schaakbord (L'Echiquier Belge), 2003
#2
10 + 5
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Qb3#
- 1...Sf1
- 2.Qb3#
- 1...Sb3
- 2.Qxb3#
- 1...Sf3
- 2.Qb3#
- 1...Se4
- 2.Qb3#
- 1...Sb1
- Tries
- 1.Sd3?
- threat
- 2.Sb4#
- 2.Sf4#
- 1...Qxf2
- 2.Sb4#
- 2.Qe5#
- 1...Qb1
- 2.Sf4#
- 2.Qg5#
- 2.Qe5#
- 1...Sb1
- 2.Sf4#
- 2.Bg2#
- 1...Sf1
- 2.Sf4#
- 2.Bg2#
- 1...Sb3
- 2.Sf4#
- 2.Bg2#
- 1...Sf3
- 2.Sf4#
- 1...Sc4
- 2.Sf4#
- 2.Bg2#
- 1...Se4
- 2.Sf4#
- 1...Qxe3+!
- threat
- 1.Sxc6?
- threat
- 2.Sb4#
- 2.Se7#
- 1...dxc6
- 2.Be6#
- 1...Qb1
- 2.Se7#
- 2.Qe5#
- 1...Sb1
- 2.Se7#
- 2.Bg2#
- 1...Sf1
- 2.Se7#
- 2.Bg2#
- 1...Sb3
- 2.Se7#
- 2.Bg2#
- 1...Sf3
- 2.Se7#
- 1...Sc4
- 2.Se7#
- 2.Bg2#
- 1...Se4
- 2.Se7#
- 2.Qb3#
- 1...Qxe3+!
- threat
- 1.Sg6?
- threat
- 2.Sf4#
- 2.Se7#
- 1...Qxf2
- 2.Se7#
- 2.Qe5#
- 1...Qxe3+!
- threat
- 1.Se4?
- threat
- 2.Sc3#
- 2.Sf6#
- 1...Qxf2
- 2.Sc3#
- 1...Qxe3
- 2.Sf6#
- 1...Sxe4
- 2.Qb3#
- 1...Qa1
- 2.Sf6#
- 1...Qc1
- 2.Sf6#
- 1...Sb1
- 2.Sf6#
- 1...Sf1
- 2.Sf6#
- 1...Sb3
- 2.Sf6#
- 1...Sf3
- 2.Sf6#
- 1...Sc4
- 2.Sf6#
- 1...d6+!
- threat
- 1.Bg2+?
- 1...Sf3
- 2.Qb3#
- 1...Se4
- 2.Qb3#
- 1...Ke6!
- 1...Sf3
- 1.Qf4?
- threat
- 2.Qf7#
- 1...Qxe5+
- 2.Qxe5#
- 1...Qxf2!
- threat
- 1.Qg5?
- threat
- 2.Qg8#
- 1...Qxe5+
- 2.Qxe5#
- 1...Qxf2
- 2.Sf3#
- 1...Qg1!
- threat
- 1.Qb3+?
- 1...Sc4
- 2.Qxc4#
- 1...Sxb3!
- 1...Sc4
- 1.Qf3+?
- 1...Qe4
- 2.Qf7#
- 1...Se4
- 2.Qb3#
- 2.Qf7#
- 1...Sxf3!
- 1...Qe4
- 1.Sd3?
- Keys
- 1.Sg4!
- threat
- 2.Sf6#
- 1...Qxe3+
- 2.Sxe3#
- 1...Qxf2
- 2.Qe5#
- 1...Se4
- 2.Qb3#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- S(b);N_GUARD::QAB(B)
- S(b);N_GUARD::QAB(B),XS(b)
- Tries
- Try
- S(F);P_SPINQ(B)
- Threat
- DUALS(2)
- Vars
- S(b);::S(F)
- S(b);N_PINQ(B)::S(F)
- Refutation
- Q(a);CHECK,XQ(B)
- Try
- S(F);P_SPINQ(B),XB(d)
- Threat
- DUALS(2)
- Vars
- P(e);N_GUARD,XS(F)::B(C)
- S(b);::S(F)
- Refutation
- Q(a);CHECK,XQ(B)
- Try
- S(F);P_SPINQ(B)
- Threat
- DUALS(2)
- Refutation
- Q(a);CHECK,XQ(B)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(A)::S(H)
- Q(a);XQ(B)::S(H)
- S(b);N_GUARD,SBLOCK,XS(H)::QAB(B)
- Q(a);::S(H)
- S(b);::S(H)
- Refutation
- P(e);CHECK
- Try
- B(C);CHECK
- Vars
- S(b);P_SPINS(b)::QAB(B)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);P_SPINS(F)
- Threat
- QAB(B)
- Vars
- Q(a);CHECK,OGATE,XS(F)::QAR1(B),XQ(a)
- Refutation
- Q(a);N_PINS(F),XP(A)
- Try
- Q(B);P_SPINS(F)
- Threat
- QAB(B)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(F)::QAR1(B),XQ(a)
- Q(a);N_PINS(F),XP(A)::QAR(B)+S(F)
- Refutation
- Q(a);N_PINS(F)
- Try
- Q(B);CHECK,P_SPINS(F)
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
- Refutation
- S(b);XQ(B)
- Try
- Q(B);CHECK,P_SPINS(F)
- Vars
- Q(a);P_SPINQ(a)::QAB(B)
- Refutation
- S(b);XQ(B)
- Try
- Actual
- S(F);P_SPINQ(B)
- Threat
- S(F)
- Vars
- Q(a);CHECK,XQ(B)::S(F),XQ(a)
- Q(a);N_GUARD,N_PINQ(B),XP(A)::QAR1(B)
- S(b);N_PINQ(B)::QAB(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).