MESON Chess Problem Database
Problem Display
PID: 228957 (B7/2pQ2BN/2R1P3/2p2rp1/R1bbk3/3NP1p1/2P1Kp2/5n2 w - - 0 1)
Larsen, Karl Adolf Koefoed
L'Echiquier, 1926
#2
11 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bxd3+
- 2.cxd3#
- 1...Bd5
- 2.Sxc5#
- 1...Bxe6
- 2.Rxe6#
- 1...Be5
- 2.Rxc7#
- 1...Bxd3+
- Tries
- 1.Rxc5+?
- 1...Bd5
- 2.Rxd4#
- 1...c6
- 2.Qxd4#
- 1...Rd5!
- 1...Bd5
- 1.Rxc7+?
- 1...Bd5
- 2.Sxc5#
- 1...Rd5!
- 1...Bd5
- 1.Rxc5+?
- Keys
- 1.e7!
- threat
- 2.Re6#
- 1...Bxd3+
- 2.cxd3#
- 1...Rd5
- 2.Qg4#
- 1...Rf3
- 2.Sxg5#
- 1...Rf4
- 2.Sxg5#
- 1...Re5
- 2.Sf6#
- 1...Rf6
- 2.Sxg5#
- 1...Rf7
- 2.Sxg5#
- 1...Rf8
- 2.Sxg5#
- 1...Bd5
- 2.Sxc5#
- 1...Be6
- 2.Rxe6#
- 1...Be5
- 2.Rxc7#
- threat
- 1.e7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- B(d);CHECK,OGATE,P_SPINB(e),XS(C)::P(A),XB(d)
- B(d);N_PINS(C),P_SPINB(e)::S(C),XP(g)
- B(d);N_PINS(C),OGATE,P_SPINB(e),XP(G)::B(K)+R(F),DCHECK,XB(d)
- B(e);P_SPINB(d),S_CUTR(h)::B(K)+R(F),XP(j)
- Tries
- Try
- R(F);CHECK,XP(g)
- Vars
- B(d);N_PINS(C),OGATE,P_SPINB(e)::R1(E),XB(e)
- P(j);P_SPINP(j)::QAR1(H),XB(e)
- Refutation
- R(h);P_SPINR(h)
- Try
- R(F);CHECK,XP(j)
- Vars
- B(d);N_PINS(C),P_SPINB(e)::S(C),XP(g)
- Refutation
- R(h);P_SPINR(h)
- Try
- Actual
- P(G);
- Threat
- B(K)+R(F),DCHECK
- Vars
- B(d);CHECK,OGATE,P_SPINB(e),XS(C)::P(A),XB(d)
- R(h);OGATE,SBLOCK::QAR2(H)
- R(h);N_GUARD::S(J),XP(i)
- R(h);N_GUARD,S_CUTB(e)::S(J)
- B(d);N_PINS(C),P_SPINB(e)::S(C),XP(g)
- B(d);N_PINS(C),P_SPINB(e)::B(K)+R(F),DCHECK,XB(d)
- B(e);P_SPINB(d),S_CUTR(h)::B(K)+R(F),XP(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).