MESON Chess Problem Database
Problem Display
PID: 9315 (2R2n2/N1pkp1Pn/6r1/3P1P1B/6Q1/B7/8/2K5 w - - 0 1)
Wennberg, Carl Fredrik
La Strategie, 1875
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxg4
- 2.Be8#
- 1...Rg5
- 2.Be8#
- 1...Ra6
- 2.Be8#
- 1...Rb6
- 2.Be8#
- 1...Rc6+
- 2.dxc6#
- 1...Rd6
- 2.Be8#
- 1...Re6
- 2.Be8#
- 1...Rf6
- 2.Be8#
- 1...Rh6
- 2.Be8#
- 1...Rxg7
- 2.Be8#
- 1...Sg5
- 2.gxf8S#
- 1...Sf6
- 2.gxf8S#
- 1...Rxg4
- Tries
- 1.Bxg6?
- threat
- 2.Be8#
- 1...c5
- 2.dxc5 ep#
- 1...Sf6
- 2.gxf8S#
- 1...Sxg6!
- threat
- 1.Qa4+?
- 1...Rc6+
- 2.Qxc6#
- 2.dxc6#
- 1...c6!
- 1...Rc6+
- 1.Qd4?
- 1...Rc6+
- 2.dxc6#
- 1...Rxg7
- 2.Be8#
- 1...c5
- 2.dxc5 ep#
- 1...Se6
- 2.dxe6#
- 1...Rg2
- 2.Be8#
- 1...Rg3
- 2.Be8#
- 1...Rg4
- 2.Be8#
- 1...Rg5
- 2.Be8#
- 1...Ra6
- 2.Be8#
- 1...Rb6
- 2.Be8#
- 1...Rd6
- 2.Be8#
- 1...Re6
- 2.Be8#
- 2.dxe6#
- 1...Rf6
- 2.Be8#
- 1...Rh6
- 2.Be8#
- 1...Sg5
- 2.gxf8S#
- 1...Sf6
- 2.gxf8S#
- 1...c6
- 2.dxc6#
- 1...e5
- 2.dxe5 ep#
- 1...e6
- 2.dxe6#
- 1...Rg1+!
- 1...Rc6+
- 1.Qg5?
- threat
- 2.Qxe7#
- 1...Rc6+
- 2.dxc6#
- 1...Rxg5
- 2.Be8#
- 1...Rxg7
- 2.Be8#
- 1...Sxg5
- 2.gxf8S#
- 1...Rd6
- 2.Be8#
- 1...Re6
- 2.Be8#
- 1...Rf6
- 2.Be8#
- 1...Sf6
- 2.gxf8S#
- 1...e5
- 2.Rd8#
- 2.Qe7#
- 2.Qd8#
- 1...e6
- 2.Rd8#
- 2.Qe7#
- 2.Qd8#
- 1...c5!
- threat
- 1.Qxg6?
- threat
- 2.Qe8#
- 2.Qc6#
- 1...Se6
- 2.Qe8#
- 2.Qxe6#
- 2.dxe6#
- 2.fxe6#
- 1...Sf6
- 2.gxf8S#
- 1...c5
- 2.Qc6#
- 2.dxc5 ep#
- 1...c6
- 2.Qe8#
- 2.Qxc6#
- 2.dxc6#
- 1...e6
- 2.Qf7#
- 2.Qe8#
- 1...Sxg6!
- threat
- 1.fxg6+?
- 1...Se6
- 2.Qxe6#
- 2.dxe6#
- 1...e6!
- 1...Se6
- 1.f6+?
- 1...Rxg4
- 2.Be8#
- 1...Se6
- 2.Qxe6#
- 2.dxe6#
- 1...e6!
- 1...Rxg4
- 1.gxf8Q?
- threat
- 2.Rd8#
- 2.Qxe7#
- 2.Qd8#
- 2.Qe8#
- 1...Rc6+
- 2.dxc6#
- 1...c5
- 2.Qd8#
- 1...Rd6
- 2.Be8#
- 2.Rd8#
- 2.Qd8#
- 2.Qe8#
- 1...Re6
- 2.Be8#
- 2.Rd8#
- 2.Qd8#
- 2.Qe8#
- 2.dxe6#
- 2.fxe6#
- 1...Rg7
- 2.Be8#
- 2.Rd8#
- 2.Qd8#
- 2.Qe8#
- 1...Rg8
- 2.Be8#
- 2.Rd8#
- 2.Qxe7#
- 1...Sf6
- 2.Rd8#
- 2.Qxe7#
- 2.Qd8#
- 1...c6
- 2.Qxe7#
- 2.Qd8#
- 2.Qe8#
- 1...e5
- 2.Rd8#
- 2.Qe7#
- 2.Qf7#
- 2.Qd8#
- 2.Qe8#
- 2.fxg6#
- 1...e6
- 2.Rd8#
- 2.Qe7#
- 2.Qf7#
- 2.Qd8#
- 2.Qe8#
- 1...Sxf8!
- threat
- 1.gxf8R?
- threat
- 2.Rcd8#
- 2.Rfd8#
- 1...Rc6+
- 2.dxc6#
- 1...c5
- 2.Rfd8#
- 1...Rg8
- 2.Be8#
- 2.Rcd8#
- 1...c6
- 2.Rfd8#
- 1...Sxf8!
- threat
- 1.Bxg6?
- Keys
- 1.Qd1!
- 1...Rc6+
- 2.dxc6#
- 1...Rxg7
- 2.Be8#
- 1...c5
- 2.dxc5 ep#
- 1...Se6
- 2.dxe6#
- 1...Rg1
- 2.Be8#
- 1...Rg2
- 2.Be8#
- 1...Rg3
- 2.Be8#
- 1...Rg4
- 2.Be8#
- 1...Rg5
- 2.Be8#
- 1...Ra6
- 2.Be8#
- 1...Rb6
- 2.Be8#
- 1...Rd6
- 2.Be8#
- 1...Re6
- 2.Be8#
- 2.dxe6#
- 1...Rf6
- 2.Be8#
- 1...Rh6
- 2.Be8#
- 1...Sg5
- 2.gxf8S#
- 1...Sf6
- 2.gxf8S#
- 1...c6
- 2.dxc6#
- 1...e5
- 2.dxe5 ep#
- 1...e6
- 2.dxe6#
- 1...Rc6+
- 1.Qd1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- R(a);OGATE,XQ(C)::B(F)
- R(a);OGATE::B(F)
- R(a);CHECK,OGATE::P(D),XR(a)
- R(a);OGATE,XP(H)::B(F)
- S(e);N_GUARD::PXS(f)=S
- Tries
- Try
- B(F);XR(a)
- Threat
- B(F)
- Vars
- P(b);OGATE::P(D),XP(b),EP
- S(e);N_GUARD::PXS(f)=S
- Refutation
- S(f);XB(F)
- Try
- Q(C);CHECK
- Refutation
- P(b);P_SPINP(b)
- Try
- Q(C);
- Vars
- R(a);CHECK,OGATE::QAR(C)+P(D)DCHECK,XR(a)
- R(a);OGATE,XP(H)::B(F)
- P(b);OGATE::QAR(C)+P(D)DCHECK,XP(b),EP
- S(f);OGATE::QAR(C)+P(D)DCHECK,XS(f)
- R(a);OGATE::B(F)
- S(e);N_GUARD::PXS(f)=S
- P(b);OGATE::QAR(C)+P(D)DCHECK,XP(b)
- P(d);OGATE::QAR(C)+P(D)DCHECK,XP(d),EP
- P(d);OGATE::QAR(C)+P(D)DCHECK,XP(d)
- Refutation
- R(a);CHECK
- Try
- Q(C);
- Threat
- QAR1(C),XP(d)
- Vars
- R(a);CHECK,OGATE::P(D),XR(a)
- R(a);OGATE,XQ(C)::B(F)
- R(a);OGATE,XP(H)::B(F)
- S(e);N_GUARD,XQ(C)::PXS(f)=S
- R(a);OGATE::B(F)
- S(e);N_GUARD::PXS(f)=S
- Refutation
- P(b);
- Try
- Q(C);XR(a)
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD::PXS(f)=S
- Refutation
- S(f);XQ(C)
- Try
- P(E);CHECK,XR(a)
- Refutation
- P(d);P_SPINP(d)
- Try
- P(E);CHECK
- Vars
- R(a);OGATE,XQ(C)::B(F)
- Refutation
- P(d);P_SPINP(d)
- Try
- P(H);XS(f)
- Threat
- DUALS(4)
- Vars
- R(a);CHECK,OGATE::P(D),XR(a)
- P(b);::QAR1(H)
- Refutation
- S(e);XQ(H)
- Try
- P(H);XS(f)
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE::P(D),XR(a)
- P(b);::R1(H)
- Refutation
- S(e);XR(H)
- Try
- Actual
- Q(C);
- Vars
- R(a);CHECK,OGATE::QAR(C)+P(D)DCHECK,XR(a)
- R(a);OGATE,XP(H)::B(F)
- P(b);OGATE::QAR(C)+P(D)DCHECK,XP(b),EP
- S(f);OGATE::QAR(C)+P(D)DCHECK,XS(f)
- R(a);OGATE,P_PINQ(C)::B(F)
- R(a);OGATE::B(F)
- S(e);N_GUARD::PXS(f)=S
- P(b);OGATE::QAR(C)+P(D)DCHECK,XP(b)
- P(d);OGATE::QAR(C)+P(D)DCHECK,XP(d),EP
- P(d);OGATE::QAR(C)+P(D)DCHECK,XP(d)
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).