MESON Chess Problem Database
Problem Display
PID: 63307 (2B1b3/5r2/4N1p1/N2kP3/1r3p2/4bP2/1BQP2K1/8 w - - 0 1)
Fabel, Karl
2nd HM., Schach, 1972
#2
9 + 7
| 23 | Die Schwalbe | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Rxb2
- 2.Qe4#
- 1...Rb3
- 2.Qxb3#
- 2.Qe4#
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Qc5#
- 1...Re4
- 2.Qxe4#
- 2.fxe4#
- 1...Rb5
- 2.Qe4#
- 2.Qc4#
- 1...Rb6
- 2.Qe4#
- 2.Qc4#
- 1...Rbb7
- 2.Qe4#
- 2.Qc4#
- 1...Rb8
- 2.Qe4#
- 2.Qc4#
- 1...Rf5
- 2.Sc7#
- 1...Rf6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Rd7
- 2.Qc6#
- 1...Rf8
- 2.Sc7#
- 1...Bxd2
- 2.Qc5#
- 1...Bd4
- 2.Qe4#
- 1...Bc5
- 2.Qxc5#
- 1...Bc6
- 2.Qxc6#
- 1...Bd7
- 2.Sc7#
- 1...Rxb2
- Tries
- 1.Bd4?
- threat
- 2.Qe4#
- 2.Qc5#
- 1...Rxd4
- 2.Qc5#
- 1...Bxd4
- 2.Qe4#
- 1...Rd7
- 2.Qc6#
- 1...Rc4
- 2.Qe4#
- 2.Qxc4#
- 1...Rb5
- 2.Qe4#
- 2.Qc4#
- 1...Rc7
- 2.Qe4#
- 1...Bd7!
- threat
- 1.Qb3+?
- 1...Rc4
- 2.Qxc4#
- 1...Rxb3!
- 1...Rc4
- 1.Qd3+?
- 1...Bd4
- 2.Qe4#
- 1...Rd4!
- 1...Bd4
- 1.Qc7?
- threat
- 2.Qd6#
- 1...Rd7
- 2.Qc6#
- 1...Rb6
- 2.Qc4#
- 1...Bc5
- 2.Qxc5#
- 1...Rxc7!
- threat
- 1.dxe3?
- threat
- 2.Qc5#
- 1...Rd7
- 2.Qc6#
- 1...Bd7
- 2.Sc7#
- 1...Rc4
- 2.Qxc4#
- 1...Rb5
- 2.Qd1#
- 2.Qd3#
- 2.Qe4#
- 2.Qd2#
- 2.Qc4#
- 2.e4#
- 1...Rc7
- 2.Sxc7#
- 1...Rxb2!
- threat
- 1.d4?
- threat
- 2.Qe4#
- 2.Qc5#
- 1...Rxd4
- 2.Qc5#
- 1...Bxd4
- 2.Qe4#
- 1...Rd7
- 2.Qc6#
- 1...Bd7
- 2.Sc7#
- 1...Rc4
- 2.Qe4#
- 2.Qxc4#
- 1...Rb5
- 2.Qe4#
- 2.Qc4#
- 1...Rc7
- 2.Sxc7#
- 2.Qe4#
- 1...Rxb2!
- threat
- 1.Bd4?
- Keys
- 1.Bd7!
- threat
- 2.Sc7#
- 2.Qc6#
- 1...Rxb2
- 2.Qe4#
- 1...Rxd7
- 2.Qc6#
- 1...Bxd7
- 2.Sc7#
- 1...Rd4
- 2.Qc5#
- 1...Bd4
- 2.Qe4#
- 1...Rc4
- 2.Qxc4#
- 1...Rb6
- 2.Sc7#
- 2.Qe4#
- 2.Qc4#
- 1...Rb7
- 2.Qe4#
- 2.Qc4#
- 2.Qc6#
- 1...Bc5
- 2.Sc7#
- 2.Qxc5#
- 1...Bb6
- 2.Qc6#
- threat
- 1.Bd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(b);N_GUARD,XB(A)::QAB1(B)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);S_CUTB(a)::QAR1(B)
- R(f);N_GUARD::S(H)
- R(f);N_GUARD::S(H),XR(f)
- R(f);S_CUTB(g)::QAB1(B)
- B(a);N_GUARD,XP(C)::QAR1(B)
- B(a);S_CUTR(b)::QAB1(B)
- B(a);N_GUARD::QAR1(B),XB(a)
- B(g);N_GUARD::QAB1(B),XB(g)
- B(g);S_CUTR(f)::S(H)
- Tries
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- R(b);XB(A)::QAR1(B)
- B(a);XB(A)::QAB1(B)
- R(f);S_CUTB(g)::QAB1(B)
- R(f);::QAB1(B)
- Refutation
- B(g);
- Try
- Q(B);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAB1(B),XR(b)
- Refutation
- R(b);XQ(B)
- Try
- Q(B);CHECK
- Vars
- B(a);P_SPINB(a),S_CUTR(b)::QAB1(B)
- Refutation
- R(b);P_SPINR(b)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- R(f);S_CUTB(g)::QAB1(B)
- R(b);N_GUARD::QAB1(B)
- B(a);N_GUARD::QAR1(B),XB(a)
- Refutation
- R(f);XQ(B)
- Try
- P(C);XB(a)
- Threat
- QAR1(B)
- Vars
- R(f);S_CUTB(g)::QAB1(B)
- B(g);S_CUTR(f)::S(H)
- R(b);N_GUARD::QAB1(B),XR(b)
- R(f);N_GUARD::S(H),XR(f)
- Refutation
- R(b);P_PINQ(B),XB(A)
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- R(b);XP(C)::QAR1(B)
- B(a);XP(C)::QAB1(B)
- R(f);S_CUTB(g)::QAB1(B)
- B(g);S_CUTR(f)::S(H)
- Refutation
- R(b);P_PINQ(B),XB(A)
- Try
- Actual
- B(I);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,XB(A)::QAB1(B)
- R(f);XB(I)::QAB1(B)
- B(g);XB(I)::S(H)
- R(b);S_CUTB(a)::QAR1(B)
- B(a);S_CUTR(b)::QAB1(B)
- R(b);N_GUARD::QAB1(B),XR(b)
- B(a);::QAB1(B)
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