MESON Chess Problem Database
Problem Display
PID: 22232 (4r1N1/q6p/7Q/1N1n1P1R/2BpkP2/br6/4PP1B/3R3K w - - 0 1)
Schroder, Jochen C
1st Comm., Die Schwalbe (Forderung), 1998-2000
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Qb8
- 2.Rxd4#
- 1...Qa4
- 2.Rxd4#
- 1...Qa5
- 2.Rxd4#
- 1...Qa6
- 2.Rxd4#
- 1...Qb7
- 2.Rxd4#
- 1...Qc7
- 2.Rxd4#
- 1...Qd7
- 2.Rxd4#
- 1...Qe7
- 2.Rxd4#
- 1...Qf7
- 2.Rxd4#
- 1...Qa8
- 2.Rxd4#
- 1...Rb1
- 2.Bd3#
- 1...Rb2
- 2.Bd3#
- 1...Rd3
- 2.Bxd3#
- 1...Rb4
- 2.Sd6#
- 2.Bd3#
- 1...Rxb5
- 2.Bd3#
- 1...Re6
- 2.Qxe6#
- 1...Ra8
- 2.Qe6#
- 1...Rb8
- 2.Qe6#
- 1...Rc8
- 2.Qe6#
- 1...Rd8
- 2.Qe6#
- 1...Rf8
- 2.Qe6#
- 1...Rxg8
- 2.Qe6#
- 1...Bc1
- 2.Sd6#
- 1...Bb2
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Be7
- 2.Qe6#
- 1...Sc3
- 2.Sf6#
- 1...Se3
- 2.Sf6#
- 2.f3#
- 1...Sb4
- 2.Sd6#
- 2.Sf6#
- 1...Sxf4
- 2.Qxf4#
- 1...Sb6
- 2.Sf6#
- 2.Rxd4#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 2.Qe6#
- 1...Qb8
- Tries
- 1.Sc3+?
- 1...Sxc3
- 2.Sf6#
- 1...dxc3
- 2.Bxd5#
- 1...Rxc3!
- 1...Sxc3
- 1.Rd3?
- threat
- 2.f3#
- 1...Rxd3
- 2.Bxd3#
- 1...Sxf4
- 2.Qxf4#
- 1...Rb1+!
- threat
- 1.Qc6?
- threat
- 2.Sf6#
- 2.Bxd5#
- 2.Qxd5#
- 1...Rxb5
- 2.Sf6#
- 2.Bd3#
- 1...Rxg8
- 2.Bxd5#
- 2.Qxd5#
- 2.Qe6#
- 1...Qc5
- 2.Sf6#
- 1...Qb7
- 2.Sf6#
- 2.Bxd5#
- 2.Rxd4#
- 1...Qd7
- 2.Sf6#
- 2.Rxd4#
- 1...Qe7
- 2.Bxd5#
- 2.Rxd4#
- 2.Qxd5#
- 1...Qf7
- 2.Rxd4#
- 1...Qg7
- 2.Bxd5#
- 2.Qxd5#
- 1...Qa8
- 2.Sf6#
- 2.Bxd5#
- 2.Rxd4#
- 1...Re5
- 2.Sf6#
- 1...Re6
- 2.Bxd5#
- 2.Qxd5#
- 2.Qxe6#
- 1...Rd8
- 2.Sf6#
- 2.Qe6#
- 1...Rf8
- 2.Bxd5#
- 2.Qxd5#
- 2.Qe6#
- 1...Be7
- 2.Bxd5#
- 2.Qxd5#
- 2.Qe6#
- 1...Rg3!
- threat
- 1.Qd6?
- threat
- 2.Bxd5#
- 2.Qxd5#
- 1...Rxb5
- 2.Bd3#
- 1...Bxd6
- 2.Sxd6#
- 1...Sxf4
- 2.Sf6#
- 2.Qxf4#
- 1...Qb7
- 2.Rxd4#
- 1...Qd7
- 2.Bxd5#
- 2.Rxd4#
- 1...Qf7
- 2.Rxd4#
- 1...Qa8
- 2.Rxd4#
- 1...Rg3
- 2.Bxd5#
- 1...Re5
- 2.Qxe5#
- 1...Rd8
- 2.Bxd5#
- 2.Qe5#
- 2.Qe6#
- 1...Sc3
- 2.Sf6#
- 2.Bd3#
- 1...Se3
- 2.Sf6#
- 2.f3#
- 1...Sb4
- 2.Sf6#
- 1...Sb6
- 2.Sf6#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 2.Qe5#
- 2.Qe6#
- 1...Qc5!
- threat
- 1.f3+?
- 1...Ke3
- 2.Bg1#
- 1...Rxf3!
- 1...Ke3
- 1.Sc3+?
- Keys
- 1.f6!
- threat
- 2.Bxd5#
- 1...Rxb5
- 2.Bd3#
- 1...Sxf4
- 2.Qxf4#
- 1...Sxf6
- 2.Sxf6#
- 1...Qc5
- 2.Qxh7#
- 1...Qb7
- 2.Rxd4#
- 1...Qd7
- 2.Rxd4#
- 1...Qf7
- 2.Rxd4#
- 1...Qa8
- 2.Rxd4#
- 2.Qxh7#
- 1...Re5
- 2.Rxe5#
- 1...Rd8
- 2.Re5#
- 1...Sc3
- 2.Bd3#
- 1...Se3
- 2.f3#
- 1...Sb4
- 2.Sd6#
- 1...Sb6
- 2.Rxd4#
- 1...Sc7
- 2.Qxh7#
- 1...Se7
- 2.Re5#
- threat
- 1.f6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 6
- REMOVED MATES = 20
- Sets
- Q(f);N_GUARD::R1(A),XP(c)
- R(b);N_GUARD,P_PINR(A)::B(F)
- R(b);N_GUARD::B(F)
- R(b);N_GUARD::B(F),XR(b)
- R(b);N_GUARD,XS(H)::B(F)
- R(h);N_GUARD::QAR2(K),XR(h)
- R(h);N_GUARD::QAR2(K)
- R(h);N_GUARD,XS(L)::QAR2(K)
- B(a);N_GUARD::S(H)
- B(a);N_GUARD::S(H),XB(a)
- B(a);S_CUTR(h)::QAR2(K)
- S(e);N_GUARD::S(L)
- S(e);OGATE,XP(G)::QAR1(K),XS(e)
- S(e);N_GUARD::S(L),XS(e)
- Tries
- Try
- S(H);CHECK
- Vars
- S(e);XS(H)::S(L)
- P(c);XS(H)::B(F),XS(e)
- Refutation
- R(b);XS(H)
- Try
- R(A);
- Threat
- P(D)
- Vars
- R(b);OGATE,XR(A)::B(F),XR(b)
- S(e);OGATE,XP(G)::QAR1(K),XS(e)
- Refutation
- R(b);CHECK
- Try
- Q(K);P_PINS(e)
- Threat
- DUALS(3)
- Vars
- Q(f);::S(L)
- Q(f);N_GUARD::R1(A),XP(c)
- R(h);::S(L)
- Refutation
- R(b);
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,XS(H)::B(F)
- B(a);XQ(K)::S(H),XB(a)
- Q(f);N_GUARD::R1(A),XP(c)
- R(b);::B(F),XS(e)
- R(h);N_GUARD::QAR1(K),XR(h)
- S(e);N_GUARD::S(L)
- S(e);N_GUARD::S(L),XS(e)
- Refutation
- Q(f);
- Try
- P(D);CHECK
- Vars
- K(d);P-FLIGHT::B(E)
- Refutation
- R(b);XP(D)
- Try
- Actual
- P(I);
- Threat
- B(F),XS(e)
- Vars
- R(b);N_GUARD,XS(H)::B(F)
- S(e);OGATE,XP(G)::QAR1(K),XS(e)
- S(e);XP(I)::S(L),XS(e)
- Q(f);N_GUARD::QAB(K),XP(g)
- Q(f);N_GUARD::R1(A),XP(c)
- R(h);N_GUARD::R1(J),XR(h)
- R(h);N_GUARD::R1(J)
- S(e);S_CUTR(b)::B(F)
- S(e);SBLOCK,S_CUTR(b)::P(D)
- S(e);S_CUTB(a)::S(H)
- S(e);S_CUTQ(f)::R1(A),XP(c)
- S(e);S_CUTQ(f)::QAB(K),XP(g)
- S(e);S_CUTR(h)::R1(J)
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