MESON Chess Problem Database
Problem Display
PID: 240682 (8/2p1pN2/2QP1b2/R1n1qkPP/6p1/3RB1P1/2B5/4K2N w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Thema Danicum, 1987
#2
12 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxd6
- 2.Rxd6#
- 1...Qxe3+
- 2.Rxe3#
- 1...Qe6
- 2.Rd5#
- 1...Se6
- 2.Sh6#
- 2.Rd1#
- 2.Rd2#
- 2.Rda3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd4#
- 2.Rdd5#
- 1...e6
- 2.Sh6#
- 1...Qxd6
- Tries
- 1.dxc7?
- threat
- 2.Sh6#
- 1...Qa1+
- 2.Rd1#
- 1...Qc3+
- 2.Rxc3#
- 1...Qxg3+
- 2.Sxg3#
- 1...Qxe3+
- 2.Rxe3#
- 1...Sxd3+
- 2.Bxd3#
- 1...Qxc7
- 2.Rd1#
- 2.Rd2#
- 2.Rda3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Bxg5
- 2.Qg6#
- 1...Qd6
- 2.Rxd6#
- 1...Qd5
- 2.Rxd5#
- 1...Qb2
- 2.Rd5#
- 1...Qd4
- 2.Rxd4#
- 1...Qf4
- 2.Rd5#
- 1...Qe6
- 2.Rd5#
- 1...Bg7
- 2.Qg6#
- 1...Qe4!
- threat
- 1.d7?
- threat
- 2.Sh6#
- 1...Qa1+
- 2.Rd1#
- 1...Qc3+
- 2.Rxc3#
- 1...Qxg3+
- 2.Sxg3#
- 1...Qxe3+
- 2.Rxe3#
- 1...Sxd3+
- 2.Bxd3#
- 1...Bxg5
- 2.Qg6#
- 1...Qd6
- 2.Rxd6#
- 1...Qd5
- 2.Rxd5#
- 1...Qb2
- 2.Rd5#
- 1...Qd4
- 2.Rxd4#
- 1...Qf4
- 2.Rd5#
- 1...Qe6
- 2.Rd5#
- 1...Bg7
- 2.Qg6#
- 1...Qe4!
- threat
- 1.dxc7?
- Keys
- 1.dxe7!
- threat
- 2.Sh6#
- 1...Qa1+
- 2.Rd1#
- 1...Qc3+
- 2.Rxc3#
- 1...Qxg3+
- 2.Sxg3#
- 1...Qxe3+
- 2.Rxe3#
- 1...Sxd3+
- 2.Bxd3#
- 1...Qxe7
- 2.Rd5#
- 1...Bxg5
- 2.Qg6#
- 1...Qd6
- 2.Rxd6#
- 1...Qd5
- 2.Rxd5#
- 1...Qb2
- 2.Rd5#
- 1...Qd4
- 2.Rxd4#
- 1...Qf4
- 2.Rd5#
- 1...Qe4
- 2.Qxf6#
- 1...Qe6
- 2.Rd5#
- 1...Bg7
- 2.Qg6#
- threat
- 1.dxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 1
- Sets
- Q(c);N_PINB(E),OGATE,P_SPINS(b),XP(K)::B(C)+R(D),XQ(c)
- Q(c);CHECK,OGATE,P_SPINS(b),XB(E)::B(C)+R(D),XQ(c)
- Q(c);P_SPINS(b),SBLOCK::B(C)+R(D),DCHECK
- P(g);SBLOCK::S(L)
- Tries
- Try
- P(K);XP(f)
- Threat
- S(L)
- Vars
- Q(c);CHECK,N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D)
- Q(c);CHECK,N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D),XQ(c)
- Q(c);CHECK,N_PINB(E),P_SPINS(b),XP(F)::S(B),XQ(c)
- Q(c);CHECK,OGATE,P_SPINS(b),XB(E)::B(C)+R(D),XQ(c)
- S(b);CHECK,OGATE,P_SPINQ(c),P_SPINS(b),XR(D)::B(C),XS(b)
- B(e);OGATE,XP(H)::QAB1(J)
- Q(c);N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D),XQ(c)
- Q(c);N_PINB(E)::B(C)+R(D),DCHECK,XQ(c)
- Q(c);N_PINB(E),P_SPINS(b)::B(C)+R(D),DCHECK
- Q(c);P_SPINS(b)::B(C)+R(D),DCHECK
- B(e);OGATE::QAB1(J)
- Refutation
- Q(c);P_SPINS(b)
- Try
- P(K);
- Threat
- S(L)
- Vars
- Q(c);CHECK,N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D)
- Q(c);CHECK,N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D),XQ(c)
- Q(c);CHECK,N_PINB(E),P_SPINS(b),XP(F)::S(B),XQ(c)
- Q(c);CHECK,OGATE,P_SPINS(b),XB(E)::B(C)+R(D),XQ(c)
- S(b);CHECK,OGATE,P_SPINQ(c),P_SPINS(b),XR(D)::B(C),XS(b)
- B(e);OGATE,XP(H)::QAB1(J)
- Q(c);N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D),XQ(c)
- Q(c);N_PINB(E)::B(C)+R(D),DCHECK,XQ(c)
- Q(c);N_PINB(E),P_SPINS(b)::B(C)+R(D),DCHECK
- Q(c);P_SPINS(b)::B(C)+R(D),DCHECK
- B(e);OGATE::QAB1(J)
- Refutation
- Q(c);P_SPINS(b)
- Try
- Actual
- P(K);XP(g)
- Threat
- S(L)
- Vars
- Q(c);CHECK,N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D)
- Q(c);CHECK,N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D),XQ(c)
- Q(c);CHECK,N_PINB(E),P_SPINS(b),XP(F)::S(B),XQ(c)
- Q(c);CHECK,OGATE,P_SPINS(b),XB(E)::B(C)+R(D),XQ(c)
- S(b);CHECK,OGATE,P_SPINQ(c),P_SPINS(b),XR(D)::B(C),XS(b)
- Q(c);P_SPINS(b),XP(K)::B(C)+R(D),DCHECK
- B(e);OGATE,XP(H)::QAB1(J)
- Q(c);N_GUARD,N_PINB(E),P_SPINS(b)::B(C)+R(D),XQ(c)
- Q(c);N_PINB(E)::B(C)+R(D),DCHECK,XQ(c)
- Q(c);N_PINB(E),P_SPINS(b)::B(C)+R(D),DCHECK
- Q(c);N_GUARD,P_SPINS(b),SBLOCK::QAR1(J),XB(e)
- Q(c);P_SPINS(b)::B(C)+R(D),DCHECK
- B(e);OGATE::QAB1(J)
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).