MESON Chess Problem Database
Problem Display
PID: 108792 (8/1BQ2PK1/1P1nrp2/r2NkpRp/nR2p3/2P5/5PPq/2B5 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Suomen Tehtavaniekat, 2006
#2
12 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Bf4#
- 1...Qf4
- 2.Bxf4#
- 1...Qh1
- 2.Bf4#
- 1...Qxg2
- 2.Bf4#
- 1...Qh3
- 2.Bf4#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Sxc3
- 2.Qxc3#
- 1...Qg1
- Tries
- 1.Sxf6?
- threat
- 2.Sd7#
- 2.Rxe4#
- 1...Qxg2
- 2.Sd7#
- 1...Rxf6
- 2.Rxe4#
- 1...Sxc3
- 2.Sd7#
- 2.Qxc3#
- 1...Sxb6
- 2.Rxe4#
- 1...Re7
- 2.Rxe4#
- 2.Qxe7#
- 1...Re8
- 2.Rxe4#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Qf4
- 2.Sd7#
- 1...Qh4
- 2.Sd7#
- 1...e3
- 2.Sd7#
- 2.Re4#
- 1...Sc5!
- threat
- 1.Se7?
- threat
- 2.Sg6#
- 2.Rxe4#
- 2.Rxf5#
- 1...Qxg2
- 2.Sg6#
- 1...Rxe7
- 2.Rxe4#
- 2.Qxe7#
- 1...Sxc3
- 2.Sg6#
- 2.Rxf5#
- 2.Qxc3#
- 1...Qg3
- 2.Sg6#
- 2.Rxe4#
- 1...Qf4
- 2.Sg6#
- 1...Qh3
- 2.Sg6#
- 2.Rxe4#
- 1...Qh4
- 2.Sg6#
- 2.Rxf5#
- 1...Rd5
- 2.Sc6#
- 2.Sg6#
- 2.Rxf5#
- 1...Sc5
- 2.Sg6#
- 2.Rxf5#
- 1...e3
- 2.Sg6#
- 2.Re4#
- 2.Rxf5#
- 1...fxg5!
- threat
- 1.Be3?
- threat
- 2.Bd4#
- 1...Re7
- 2.Qxe7#
- 1...Re8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rxd5!
- threat
- 1.f4+?
- 1...Qxf4
- 2.Bxf4#
- 1...exf4 ep!
- 1...Qxf4
- 1.f8S?
- threat
- 2.Sg6#
- 2.Sd7#
- 1...Re7+
- 2.Qxe7#
- 1...Sxb6
- 2.Sg6#
- 1...fxg5
- 2.Sd7#
- 1...Sc5
- 2.Sg6#
- 1...Re8!
- threat
- 1.Sxf6?
- Keys
- 1.Se3!
- threat
- 2.Sc4#
- 2.Rxe4#
- 2.Rxf5#
- 1...Kf4
- 2.Sg4#
- 1...Qxg2
- 2.Sc4#
- 1...Sxc3
- 2.Rxf5#
- 1...Sxb6
- 2.Rxe4#
- 2.Rxf5#
- 1...fxg5
- 2.Sc4#
- 1...Re7
- 2.Rxe4#
- 1...Re8
- 2.Rxe4#
- 1...Qg3
- 2.Sc4#
- 2.Rxe4#
- 1...Qf4
- 2.Sc4#
- 1...Qh3
- 2.Sc4#
- 2.Rxe4#
- 1...Qh4
- 2.Sc4#
- 2.Rxf5#
- 1...Rc5
- 2.Rxe4#
- 2.Rxf5#
- 1...Rd5
- 2.Sc4#
- 2.Rxf5#
- 1...Sb2
- 2.Rxe4#
- 2.Rxf5#
- 1...Sc5
- 2.Sc4#
- 2.Rxf5#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(a);N_GUARD::B(A)
- Q(a);N_GUARD::B(A),XQ(a)
- Q(a);N_GUARD,P_PINR(G),XP(C)::B(A)
- R(i);OGATEB,P_PINP(K)::QAR2(J),XR(i)
- R(i);OGATE::PXR(i)=Q
- S(b);OGATE,XP(D)::QAB(J),XS(b)
- Tries
- Try
- S(F);XP(j)
- Threat
- DUALS(2)
- Vars
- Q(a);P_PINR(G),XP(C)::S(F)
- R(i);XS(F)::R1(E),XP(c)
- S(b);XP(H)::R1(E),XP(c)
- Q(a);::S(F)
- Refutation
- S(b);
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- Q(a);P_PINR(G),XP(C)::S(F)
- Q(a);::S(F)
- Refutation
- P(j);N_SPINP(f),XR(G)
- Try
- B(A);
- Threat
- B(A)
- Vars
- R(i);OGATEB,P_PINP(K)::QAR2(J),XR(i)
- R(i);OGATE::PXR(i)=Q
- Refutation
- R(d);XS(F)
- Try
- P(B);CHECK
- Vars
- Q(a);OGATE,XP(B)::B(A),XQ(a)
- Refutation
- P(c);EP,XP(B)
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- R(i);CHECK,OGATEB::QAR2(J),XR(i)
- S(b);XP(H)::S(K)
- P(j);N_SPINP(f),XR(G)::S(K)
- S(b);::S(K)
- Refutation
- R(i);
- Try
- Actual
- S(F);
- Threat
- DUALS(3)
- Vars
- K(e);N_SPINP(f),P_SPINP(c),S_FLIGHT::B(A)+S(F)
- Q(a);P_PINR(G),XP(C)::S(F)
- S(b);XP(D)::R1(G),XP(f)
- P(j);N_SPINP(f),XR(G)::S(F)
- R(i);P_PINP(K)::R1(E),XP(c)
- R(i);::R1(E),XP(c)
- Q(a);::S(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).