MESON Chess Problem Database
Problem Display
PID: 245711 (3KB3/2P2p2/1n1k4/2RP1r2/2b2P1N/B2rnp1Q/8/3R3q w - - 0 1)
Wirtanen, Erkki Aukusti
Magyar Sakkelet, 1965
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxd1
- 2.Ra5#
- 2.Rb5#
- 1...Rd2
- 2.Ra5#
- 2.Rb5#
- 1...Rxa3
- 2.Rc6#
- 1...Rb3
- 2.Rc6#
- 1...Rc3
- 2.Rc6#
- 1...Rd4
- 2.Ra5#
- 2.Rb5#
- 1...Rdxd5
- 2.Rc6#
- 1...Rfxd5
- 2.Rc6#
- 1...Bb3
- 2.Ra5#
- 2.Rb5#
- 1...Bxd5
- 2.Rc6#
- 1...Sxd1
- 2.Sxf5#
- 1...Sf1
- 2.Sxf5#
- 1...Sc2
- 2.Sxf5#
- 1...Sg2
- 2.Sxf5#
- 1...Sg4
- 2.Sxf5#
- 1...Sexd5
- 2.Rc6#
- 1...Sa4
- 2.c8S#
- 1...Sbxd5
- 2.Rc6#
- 1...Sd7
- 2.c8S#
- 1...Sa8
- 2.c8S#
- 1...Rxd1
- Tries
- 1.Rxd3?
- threat
- 2.Rxc4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc6#
- 1...Bxd3
- 2.Ra5#
- 2.Rb5#
- 1...Bxd5
- 2.Rc6#
- 1...Sexd5
- 2.Rc6#
- 1...Sbxd5
- 2.Rc6#
- 1...Qa1
- 2.Rc6#
- 1...Qb1
- 2.Rc6#
- 1...Qc1
- 2.Rc6#
- 1...Qe1
- 2.Rc6#
- 1...Ba2
- 2.Rc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Rc4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc6#
- 1...Bb3
- 2.Rc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Rc4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc6#
- 1...Bb5
- 2.Rc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Rc4#
- 2.Rxb5#
- 2.Rc6#
- 1...Ba6
- 2.Rc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Rc4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc6#
- 1...Sc2
- 2.Sxf5#
- 2.Rc6#
- 1...Sa4
- 2.Rc6#
- 2.c8S#
- 1...Sd7
- 2.Rc6#
- 2.c8S#
- 1...Rxf4!
- threat
- 1.Rxc4+?
- 1...Rxa3
- 2.Rc6#
- 1...Kxd5!
- 1...Rxa3
- 1.Qxf5?
- threat
- 2.Rc6#
- 2.Qe5#
- 2.Qf6#
- 1...Rxa3
- 2.Rc6#
- 1...Bxd5
- 2.Rc3#
- 2.Rxd5#
- 2.Rc6#
- 2.Qe5#
- 1...Sexd5
- 2.Rxd5#
- 2.Rc6#
- 2.Qe5#
- 1...Sxf5
- 2.Sxf5#
- 1...Sbxd5
- 2.Rxd5#
- 2.Rc6#
- 2.Qd7#
- 2.Qe5#
- 2.c8S#
- 1...Qh3
- 2.Rc6#
- 2.Qe5#
- 1...Sg4
- 2.Rc6#
- 1...Sd7
- 2.Rc6#
- 2.Qxd7#
- 2.c8S#
- 1...f6
- 2.Rc6#
- 2.Qe6#
- 2.Qxf6#
- 1...Qxh4+!
- threat
- 1.c8Q?
- threat
- 2.Qc6#
- 2.Qc7#
- 2.Qb8#
- 1...Rxa3
- 2.Rc6#
- 2.Qc6#
- 2.Qc7#
- 1...Rdxd5
- 2.Rxc4#
- 2.Ra5#
- 2.Rb5#
- 2.Rcxd5#
- 2.Rc6#
- 2.Rc7#
- 2.Qc6#
- 1...Rxf4
- 2.Qc7#
- 2.Qb8#
- 1...Bxd5
- 2.Rc3#
- 2.Rc6#
- 1...Sexd5
- 2.Sxf5#
- 2.Rc6#
- 2.Qc6#
- 1...Sbxd5
- 2.Rc6#
- 2.Qd7#
- 2.Qc6#
- 1...Bb5
- 2.Qc7#
- 2.Qb8#
- 1...Sd7
- 2.Qxd7#
- 2.Qc6#
- 2.Qc7#
- 1...Sa8
- 2.Qd7#
- 2.Qc6#
- 1...Sxc8!
- threat
- 1.Rxd3?
- Keys
- 1.Bxf7!
- threat
- 2.Rc6#
- 1...Rdxd5
- 2.Rxc4#
- 1...Rxf4
- 2.Qe6#
- 1...Rfxd5
- 2.Qe6#
- 1...Rxf7
- 2.Qe6#
- 1...Bxd5
- 2.Rc3#
- 1...Sexd5
- 2.Sxf5#
- 1...Sbxd5
- 2.c8S#
- threat
- 1.Bxf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- R(b);XB(B)::R1(F)
- R(b);::B(B)+R(F),DCHECK
- R(b);P_SPINR(b),XP(G)::B(B)+R(F),DCHECK
- R(f);SBLOCK,XP(G)::B(B)+R(F),DCHECK
- B(e);SBLOCK,XP(G)::B(B)+R(F),DCHECK
- S(c);N_GUARD,XR(A)::S(E),XR(f)
- S(c);N_GUARD::S(E),XR(f)
- S(c);SBLOCK,XP(G)::B(B)+R(F),DCHECK
- S(g);N_GUARD::P=S
- S(g);SBLOCK,XP(G)::B(B)+R(F),DCHECK
- Tries
- Try
- R(A);XR(b)
- Threat
- DUALS(4)
- Vars
- B(e);P_SPINB(e),XP(G)::B(B)+R(F),DCHECK
- S(c);P_SPINS(c),XP(G)::B(B)+R(F),DCHECK
- S(g);P_SPINS(g),XP(G)::B(B)+R(F),DCHECK
- Q(a);::B(B)+R(F),DCHECK
- Refutation
- R(f);XP(D)
- Try
- R(F);CHECK,XB(e)
- Vars
- R(b);XB(B)::R1(F)
- Refutation
- K(h);P-FLIGHT,P_SPINR(b),XP(G)
- Try
- Q(C);XR(f)
- Threat
- DUALS(3)
- Vars
- R(b);XB(B)::R1(F)
- S(c);XQ(C)::S(E),XS(c)
- S(c);::B(B)+R(F),DCHECK
- Refutation
- Q(a);CHECK,XS(E)
- Try
- P(H);
- Threat
- DUALS(3)
- Refutation
- S(g);XQ(H)
- Try
- Actual
- B(J);XP(i)
- Threat
- B(B)+R(F),DCHECK
- Vars
- R(b);N_GUARD,P_SPINR(b),XP(G)::B(B)+R(F),XB(e)
- R(f);OGATE,XP(D)::QAR1(C)
- R(f);OGATE,XP(G)::QAR1(C)
- R(f);OGATE,XB(J)::QAR1(C)
- B(e);OGATE,XP(G)::B(B)+R(F)
- S(c);N_GUARD,XP(G)::S(E),XR(f)
- S(g);N_GUARD,XP(G)::P=S
Developed and maintained by Brian Stephenson.
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