MESON Chess Problem Database
Problem Display
PID: 78204 (7q/3prN2/2N2b1n/2Q4n/3rkB2/3p4/b2K1R2/3B4 w - - 0 1)
Keller, Michael
4th Prize, Die Schwalbe, 2007
#2
7 + 10
| 23 | Die Schwalbe | 2013 |
| 56 | The Problemist | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Ra4
- 2.Sd6#
- 1...Rb4
- 2.Sd6#
- 1...Rc4
- 2.Sd6#
- 1...Rd6
- 2.Sxd6#
- 1...Bd5
- 2.Sd6#
- 1...Bg5
- 2.Sxg5#
- 1...Bg7
- 2.Sg5#
- 1...Sxf4
- 2.Bf3#
- 1...d5
- 2.Sd6#
- 1...Ra4
- Tries
- 1.Bh2?
- threat
- 2.Bf3#
- 1...Bg5+
- 2.Sxg5#
- 1...Rd5
- 2.Qe3#
- 1...Re5
- 2.Qxd4#
- 1...Bd5
- 2.Sd6#
- 1...Be5
- 2.Sg5#
- 1...d5
- 2.Sd6#
- 1...Sg3!
- threat
- 1.Be3?
- threat
- 2.Bf3#
- 1...Re5
- 2.Qxd4#
- 1...Bd5
- 2.Sd6#
- 1...Be5
- 2.Sg5#
- 1...d5
- 2.Sd6#
- 1...Rd5!
- threat
- 1.Bg3?
- threat
- 2.Bf3#
- 1...Bg5+
- 2.Sxg5#
- 1...Rd5
- 2.Qe3#
- 1...Re5
- 2.Qxd4#
- 1...Bd5
- 2.Sd6#
- 1...Be5
- 2.Sg5#
- 1...d5
- 2.Sd6#
- 1...Sxg3!
- threat
- 1.Bg5?
- threat
- 2.Bf3#
- 1...Bxg5+
- 2.Sxg5#
- 1...Rd5
- 2.Qe3#
- 1...Re5
- 2.Qxd4#
- 1...Bd5
- 2.Sd6#
- 1...d5
- 2.Sd6#
- 1...Be5!
- threat
- 1.Bd6?
- threat
- 2.Bf3#
- 1...Bg5+
- 2.Sxg5#
- 1...Rxd6
- 2.Sxd6#
- 1...Rd5
- 2.Qe3#
- 1...Re5
- 2.Qxd4#
- 1...Be5
- 2.Sg5#
- 1...Bd5!
- threat
- 1.Bxh6?
- threat
- 2.Bf3#
- 2.Qf5#
- 1...Bg5+
- 2.Sxg5#
- 1...Qh7
- 2.Bf3#
- 1...Rd5
- 2.Qe3#
- 1...Re5
- 2.Qxd4#
- 1...Bd5
- 2.Sd6#
- 1...Be6
- 2.Bf3#
- 1...Be5
- 2.Sg5#
- 1...Sg3
- 2.Bf3#
- 2.Rf4#
- 1...Sf4
- 2.Bf3#
- 2.Rxf4#
- 1...Sg7
- 2.Bf3#
- 2.Rf4#
- 1...d5
- 2.Sd6#
- 1...Qxh6+!
- threat
- 1.Bc7?
- threat
- 2.Bf3#
- 1...Bg5+
- 2.Sxg5#
- 1...Rd5
- 2.Qe3#
- 1...Rd6
- 2.Sxd6#
- 1...Re5
- 2.Qxd4#
- 1...Bd5
- 2.Sd6#
- 1...Be5
- 2.Sg5#
- 1...d5
- 2.Sd6#
- 1...d6!
- threat
- 1.Bh2?
- Keys
- 1.Be5!
- threat
- 2.Qxd4#
- 1...Bg5+
- 2.Sxg5#
- 1...Bxe5
- 2.Sg5#
- 1...Sf4
- 2.Rxf4#
- 1...Ra4
- 2.Sd6#
- 1...Rb4
- 2.Sd6#
- 1...Rc4
- 2.Sd6#
- 1...Rd5
- 2.Qe3#
- 1...Rd6
- 2.Sxd6#
- 1...Sf5
- 2.Bf3#
- threat
- 1.Be5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(c);N_GUARD::S(G)
- R(c);N_GUARD::S(G),XR(c)
- B(a);S_CUTR(c)::S(G)
- B(f);N_GUARD,P_PINB(D)::S(G),XB(f)
- B(f);N_GUARD::S(G)
- S(e);SBLOCK,XB(D)::B(A)
- P(h);S_CUTR(c)::S(G)
- Tries
- Try
- B(D);
- Threat
- B(A)
- Vars
- B(f);CHECK,N_GUARD::S(G),XB(f)
- R(c);OGATE,SBLOCK::QAR1(E)
- R(i);S_CUTB(f)::QAR1(E),XR(c)
- B(a);S_CUTR(c)::S(G)
- B(f);N_GUARD::S(G)
- P(h);S_CUTR(c)::S(G)
- Refutation
- S(e);
- Try
- B(D);
- Threat
- B(A)
- Vars
- R(i);S_CUTB(f)::QAR1(E),XR(c)
- B(a);S_CUTR(c)::S(G)
- B(f);N_GUARD::S(G)
- P(h);S_CUTR(c)::S(G)
- Refutation
- R(c);
- Try
- B(D);
- Threat
- B(A)
- Vars
- B(f);CHECK,N_GUARD::S(G),XB(f)
- R(c);OGATE,SBLOCK::QAR1(E)
- R(i);S_CUTB(f)::QAR1(E),XR(c)
- B(a);S_CUTR(c)::S(G)
- B(f);N_GUARD::S(G)
- P(h);S_CUTR(c)::S(G)
- Refutation
- S(e);XB(D)
- Try
- B(D);
- Threat
- B(A)
- Vars
- B(f);CHECK,XB(D)::S(G),XB(f)
- R(c);OGATE,SBLOCK::QAR1(E)
- R(i);S_CUTB(f)::QAR1(E),XR(c)
- B(a);S_CUTR(c)::S(G)
- P(h);S_CUTR(c)::S(G)
- Refutation
- B(f);
- Try
- B(D);
- Threat
- B(A)
- Vars
- B(f);CHECK,N_GUARD::S(G),XB(f)
- R(c);XB(D)::S(G),XR(c)
- R(c);OGATE,SBLOCK::QAR1(E)
- R(i);S_CUTB(f)::QAR1(E),XR(c)
- B(f);N_GUARD::S(G)
- Refutation
- B(a);
- Try
- B(D);XS(g)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,N_GUARD::S(G),XB(f)
- Q(j);::B(A)
- R(c);OGATE,SBLOCK::QAR1(E)
- R(i);S_CUTB(f)::QAR1(E),XR(c)
- B(a);S_CUTR(c)::S(G)
- B(a);::B(A)
- B(f);N_GUARD::S(G)
- P(h);S_CUTR(c)::S(G)
- Refutation
- Q(j);CHECK,XB(D)
- Try
- B(D);
- Threat
- B(A)
- Vars
- B(f);CHECK,N_GUARD::S(G),XB(f)
- R(c);OGATE,SBLOCK::QAR1(E)
- R(c);N_GUARD::S(G),XR(c)
- R(i);S_CUTB(f)::QAR1(E),XR(c)
- B(a);S_CUTR(c)::S(G)
- B(f);N_GUARD::S(G)
- P(h);S_CUTR(c)::S(G)
- Refutation
- P(h);
- Try
- Actual
- B(D);
- Threat
- QAR1(E),XR(c)
- Vars
- B(f);CHECK,N_GUARD::S(G),XB(f)
- B(f);N_GUARD,XB(D)::S(G)
- S(e);N_GUARD::R1(C),XS(e)
- R(c);N_GUARD::S(G)
- R(c);OGATE,SBLOCK::QAR1(E)
- R(c);N_GUARD::S(G),XR(c)
- S(g);SBLOCK::B(A)
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