MESON Chess Problem Database
Problem Display
PID: 228807 (7Q/5P1n/2p2r1p/3B4/bBNk4/3PN3/1PP4K/2n5 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Tidskrift for Schack, 1978
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Sxd3
- 2.c3#
- 1...Sg5
- 2.Qxf6#
- 1...Sf8
- 2.Qxf6#
- 1...cxd5
- 2.Sf5#
- 1...c5
- 2.Bc3#
- 1...Sxd3
- Tries
- 1.Bh1?
- threat
- 2.Sf5#
- 1...Sxd3
- 2.c3#
- 1...Bxc2!
- threat
- 1.Bg2?
- threat
- 2.Sf5#
- 1...Sxd3
- 2.c3#
- 1...Bxc2!
- threat
- 1.Bf3?
- threat
- 2.Sf5#
- 1...Sxd3
- 2.c3#
- 1...Bxc2!
- threat
- 1.Be4?
- threat
- 2.Sf5#
- 2.c3#
- 1...Bxc2
- 2.Sxc2#
- 2.Sf5#
- 1...Sa2
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Sxd3!
- threat
- 1.Be6?
- threat
- 2.Sf5#
- 2.Qd8#
- 1...Bxc2
- 2.Qd8#
- 1...Sf8
- 2.Sf5#
- 2.Qxf6#
- 1...c5
- 2.Sf5#
- 2.Bc3#
- 1...Sxd3!
- threat
- 1.f8Q?
- threat
- 2.Bc3#
- 2.Bc5#
- 2.Qc5#
- 1...Sxd3
- 2.Bc3#
- 2.c3#
- 1...Sxf8
- 2.Qxf6#
- 1...Sa2
- 2.Bc5#
- 2.Qc5#
- 1...Se2
- 2.Bc5#
- 2.Qc5#
- 1...Sb3
- 2.Bc3#
- 1...c5
- 2.Bc3#
- 2.Bxc5#
- 2.Qxc5#
- 1...Bxc2!
- threat
- 1.f8S?
- threat
- 2.Se6#
- 1...Sxf8
- 2.Qxf6#
- 1...Sg5
- 2.Qxf6#
- 1...Bxc2!
- threat
- 1.f8B?
- threat
- 2.Bc3#
- 2.Bbc5#
- 2.Bfc5#
- 1...Sxd3
- 2.Bc3#
- 2.c3#
- 1...Sxf8
- 2.Qxf6#
- 1...Sa2
- 2.Bbc5#
- 2.Bfc5#
- 1...Se2
- 2.Bbc5#
- 2.Bfc5#
- 1...Sb3
- 2.Bc3#
- 1...c5
- 2.Bc3#
- 2.Bbxc5#
- 2.Bfxc5#
- 1...Bxc2!
- threat
- 1.Bh1?
- Keys
- 1.Qd8!
- threat
- 2.Be6#
- 1...Rf2+
- 2.Bg2#
- 1...Rxf7
- 2.Bxf7#
- 1...Sxd3
- 2.c3#
- 1...cxd5
- 2.Qxd5#
- 1...Rf5
- 2.Sxf5#
- 1...Rd6
- 2.Qh4#
- 1...Re6
- 2.Sf5#
- 2.Bxe6#
- 1...Sf8
- 2.Qxf6#
- 1...c5
- 2.Bc3#
- threat
- 1.Qd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- S(a);SBLOCK,XP(D)::P(B)
- S(g);N_GUARD::QAB(J),XR(e)
- P(d);SBLOCK,XB(H)::S(E)
- P(d);SBLOCK::B(F)
- Tries
- Try
- B(H);
- Threat
- S(E)
- Vars
- S(a);SBLOCK,XP(D)::P(B)
- Refutation
- B(b);XP(B)
- Try
- B(H);
- Threat
- S(E)
- Vars
- S(a);SBLOCK,XP(D)::P(B)
- Refutation
- B(b);XP(B)
- Try
- B(H);
- Threat
- S(E)
- Vars
- S(a);SBLOCK,XP(D)::P(B)
- Refutation
- B(b);XP(B)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- S(a);::S(E)
- Refutation
- S(a);XP(D)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- B(b);XP(B)::QAR(J)
- Refutation
- S(a);XP(D)
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- S(g);N_GUARD,XQ(I)::QAB(J),XR(e)
- S(a);::B(F)
- Refutation
- B(b);XP(B)
- Try
- P(I);
- Threat
- S(I)
- Vars
- S(g);N_GUARD,XS(I)::QAB(J),XR(e)
- S(g);N_GUARD::QAB(J),XR(e)
- Refutation
- B(b);XP(B)
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- S(g);N_GUARD,XB(I)::QAB(J),XR(e)
- S(a);::B(F)
- Refutation
- B(b);XP(B)
- Try
- Actual
- Q(J);N_PINR(e)
- Threat
- QAR(J)+B(H)
- Vars
- R(e);CHECK,N_GUARD::QAR(J)+B(H)
- R(e);OGATE,XP(I)::QAR(J)+B(H),XR(e)
- S(a);SBLOCK,XP(D)::P(B)
- P(d);OGATE,P_SPINP(d),XB(H)::QAR1(J),XP(d)
- R(e);N_GUARD::S(E),XR(e)
- R(e);OGATE::QAR(J)
- S(g);N_GUARD::QAB(J),XR(e)
- P(d);SBLOCK::B(F)
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).