MESON Chess Problem Database
Problem Display
PID: 17942 (8/7b/rQ6/r2PnRp1/p1p1knp1/8/2K1N3/5RB1 w - - 0 1)
Valve, Leo Erland
Die Schwalbe, 1952
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Kxd5
- 2.Sc3#
- 1...Kxf5
- 2.Sg3#
- 1...Rxd5
- 2.Sg3#
- 1...Bxf5
- 2.Sc3#
- 2.Qd4#
- 1...Sg2
- 2.Sc3#
- 2.Qd4#
- 1...Sfd3
- 2.Sc3#
- 2.Qd4#
- 1...Sh3
- 2.Sc3#
- 2.Qd4#
- 1...Sxd5
- 2.Sg3#
- 2.Qd4#
- 1...Sh5
- 2.Sc3#
- 2.Qd4#
- 1...Se6
- 2.Sc3#
- 1...Sfg6
- 2.Sc3#
- 2.Qd4#
- 1...Sed3
- 2.Sg3#
- 1...Sf3
- 2.Sg3#
- 1...Sc6
- 2.Sg3#
- 1...Seg6
- 2.Sg3#
- 1...Sd7
- 2.Sg3#
- 1...Sf7
- 2.Sg3#
- 1...Kxd5
- Tries
- 1.R1xf4+?
- 1...Kxd5
- 2.Sc3#
- 2.Rd4#
- 1...gxf4!
- 1...Kxd5
- 1.Qd6?
- threat
- 2.Sg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Kxf5
- 2.Sg3#
- 1...Rxd5
- 2.Sg3#
- 1...Bxf5
- 2.Sc3#
- 2.Sg3#
- 1...Sxe2
- 2.Rxe5#
- 2.Qxe5#
- 1...Sfd3
- 2.Sc3#
- 2.Sg3#
- 1...Sh5
- 2.Sc3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Sfg6
- 2.Sc3#
- 2.Sg3#
- 1...Sed3
- 2.Sg3#
- 1...Sf3
- 2.Sg3#
- 1...Sc6
- 2.Sg3#
- 1...Seg6
- 2.Sg3#
- 1...Sd7
- 2.Sg3#
- 1...Sf7
- 2.Sg3#
- 1...g3
- 2.Sxg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Rxd6!
- threat
- 1.Qe6?
- threat
- 2.Sc3#
- 2.Sg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Rxd5
- 2.Sc3#
- 2.Sg3#
- 1...Bxf5
- 2.Sc3#
- 2.Sg3#
- 1...Sxe2
- 2.Rxe5#
- 2.Qxe5#
- 1...Sxd5
- 2.Sg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Sxe6
- 2.Sc3#
- 1...Sd3
- 2.Sc3#
- 2.Sg3#
- 1...Sh5
- 2.Sc3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Sg6
- 2.Sc3#
- 2.Sg3#
- 1...c3
- 2.Sxc3#
- 2.Sg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...g3
- 2.Sc3#
- 2.Sxg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Rxe6!
- threat
- 1.Qf6?
- threat
- 2.Sc3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Kxd5
- 2.Sc3#
- 1...Rxd5
- 2.Sc3#
- 2.Sg3#
- 1...Bxf5
- 2.Sc3#
- 1...Sxe2
- 2.Rxe5#
- 2.Qxe5#
- 1...Sxd5
- 2.Sg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Re6
- 2.Sc3#
- 1...Sfd3
- 2.Sc3#
- 1...Sfg6
- 2.Sc3#
- 1...Sed3
- 2.Sc3#
- 2.Sg3#
- 1...Sf3
- 2.Sc3#
- 2.Sg3#
- 1...Sc6
- 2.Sc3#
- 2.Sg3#
- 1...Seg6
- 2.Sc3#
- 2.Sg3#
- 1...Sd7
- 2.Sc3#
- 2.Sg3#
- 1...Sf7
- 2.Sc3#
- 2.Sg3#
- 1...c3
- 2.Sxc3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Rxf6!
- threat
- 1.R1xf4+?
- Keys
- 1.Bd4!
- threat
- 2.Rxe5#
- 1...Kxd5
- 2.Sc3#
- 1...Kxf5
- 2.Sg3#
- 1...Rxd5
- 2.Sg3#
- 1...Bxf5
- 2.Sc3#
- 1...Sfd3
- 2.Sc3#
- 1...Sfg6
- 2.Sc3#
- 1...Sed3
- 2.Sg3#
- 1...Sf3
- 2.Sg3#
- 1...Sc6
- 2.Sg3#
- 1...Seg6
- 2.Sg3#
- 1...Sd7
- 2.Sg3#
- 1...Sf7
- 2.Sg3#
- threat
- 1.Bd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- K(c);P_PINR(F),P_SPINS(g),S_FLIGHT,XP(E)::S(D)
- K(c);P_SPINS(d),S_FLIGHT,XR(F)::S(D)
- R(f);SBLOCK,XP(E)::S(D)
- S(d);::S(D)
- S(g);::S(D)
- Tries
- Try
- R(A);CHECK,XS(d)
- Refutation
- P(h);XR(A)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- K(c);P_SPINS(d),S_FLIGHT,XR(F)::S(D)
- R(f);XP(E)::S(D)
- S(g);::S(D)
- Refutation
- R(i);XQ(G)
- Try
- Q(G);P_PINS(g)
- Threat
- DUALS(4)
- Vars
- S(d);N_SPINS(g),XQ(G)::S(D)
- Refutation
- R(i);N_SPINS(g),XQ(G)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- K(c);P_PINR(F),P_SPINS(g),S_FLIGHT,XP(E)::S(D)
- B(j);XR(F)::S(D)
- R(i);::S(D)
- S(d);::S(D)
- Refutation
- R(i);XQ(G)
- Try
- Actual
- B(B);
- Threat
- R1(F),XS(g)
- Vars
- K(c);P_PINR(F),P_SPINS(g),S_FLIGHT,XP(E)::S(D)
- K(c);P_SPINS(d),S_FLIGHT,XR(F)::S(D)
- R(f);SBLOCK,XP(E)::S(D)
- B(j);SBLOCK,XR(F)::S(D)
- S(d);::S(D)
- S(g);::S(D)
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