MESON Chess Problem Database
Problem Display
PID: 143421 (8/4Q2K/B7/rr1k1N2/N7/1pRpn3/2n5/4R3 w - - 0 1)
Forster, Klaus
3rd Prize, Die Schwalbe, 2011
#2
7 + 7
| 23 | Die Schwalbe | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Rb6
- 2.Sxb6#
- 1...Rb7
- 2.Bxb7#
- 1...Sd4
- 2.Sxe3#
- 1...Sd1
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Sf1
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Sg2
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Sc4
- 2.Qe4#
- 2.Qe6#
- 1...Sg4
- 2.Qd6#
- 2.Qd8#
- 2.Qe4#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Sxf5
- 2.Qe5#
- 1...Rb6
- Tries
- 1.Sxe3+?
- 1...Kd4
- 2.Rc4#
- 1...Sxe3!
- 1...Kd4
- 1.Bxb5?
- threat
- 2.Sb6#
- 2.Bc6#
- 2.Rc5#
- 1...Rxa4
- 2.Bc6#
- 2.Rc5#
- 1...Sxf5
- 2.Qc5#
- 2.Qe5#
- 1...Ra6
- 2.Rc5#
- 1...Sb4
- 2.Sb6#
- 2.Rc5#
- 1...Sd4
- 2.Sb6#
- 2.Sxe3#
- 2.Rc5#
- 1...Sc4
- 2.Qc5#
- 2.Qe4#
- 2.Qe6#
- 2.Qb7#
- 2.Qf7#
- 1...Rxb5!
- threat
- 1.Rxe3?
- threat
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Rxa4
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Rxa6
- 2.Re5#
- 2.Qe4#
- 2.Qe5#
- 1...Rc5
- 2.Qd6#
- 2.Qe4#
- 2.Qe6#
- 2.Qd7#
- 1...Rb4
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Rb6
- 2.Sxb6#
- 2.Re5#
- 2.Qe4#
- 2.Qe5#
- 1...Rb7
- 2.Bxb7#
- 2.Re5#
- 2.Qxb7#
- 1...Rb8
- 2.Re5#
- 2.Qd6#
- 2.Qe4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Sd4
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe4#
- 2.Qe5#
- 2.Qd7#
- 1...Sxe3!
- threat
- 1.Rxd3+?
- 1...Kc4
- 2.Sb2#
- 1...Kc6
- 2.Rd6#
- 2.Qd6#
- 2.Qd7#
- 1...Sd4!
- 1...Kc4
- 1.Rc6?
- threat
- 2.Qe6#
- 1...Kxc6
- 2.Qd6#
- 1...Sxf5
- 2.Qe4#
- 1...Rb7
- 2.Rd6#
- 1...Sd4!
- threat
- 1.Rc7?
- threat
- 2.Sc3#
- 1...Sxf5
- 2.Qe5#
- 1...Rc5
- 2.Sb6#
- 1...Sd1
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Rxa4!
- threat
- 1.Rc8?
- threat
- 2.Sc3#
- 1...Sxf5
- 2.Qe5#
- 1...Rc5
- 2.Sb6#
- 1...Sd1
- 2.Re5#
- 2.Qd6#
- 2.Qd8#
- 2.Qe4#
- 2.Qe5#
- 2.Qe6#
- 2.Qd7#
- 2.Qf7#
- 1...Rxa4!
- threat
- 1.Sxe3+?
- Keys
- 1.Rc4!
- threat
- 2.Qe4#
- 1...Kxc4
- 2.Qc5#
- 1...Sxf5
- 2.Qe6#
- 1...Rb7
- 2.Sc3#
- 1...Sd4
- 2.Sxe3#
- threat
- 1.Rc4!
This is after
After Peter Heyl.
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(f);N_GUARD::S(C),XR(f)
- R(f);N_GUARD,P_PINQ(F)::B(E),XR(f)
- S(a);N_GUARD,SBLOCK::S(D),XS(d)
- S(d);XS(D)::QAR1(F)
- Tries
- Try
- S(D);CHECK,XS(d)
- Vars
- K(g);P-FLIGHT::R1(B)
- Refutation
- S(a);XS(D)
- Try
- B(E);XR(f)
- Threat
- DUALS(3)
- Vars
- R(e);::R1(B)
- Refutation
- R(e);XB(E)
- Try
- R(A);XS(d)
- Threat
- DUALS(8)
- Refutation
- S(a);XR(A)
- Try
- R(B);CHECK,XP(c)
- Vars
- K(g);P_SPINR(f),S_FLIGHT::S(C)
- Refutation
- S(a);P_SPINS(a)
- Try
- R(B);
- Threat
- QAB1(F)
- Vars
- K(g);S_FLIGHT,XR(B)::QAR1(F)
- S(d);XS(D)::QAB1(F)
- R(f);P_PINQ(F)::R1(B)
- Refutation
- S(a);
- Try
- R(B);
- Threat
- S(C)
- Vars
- S(d);XS(D)::QAR1(F)
- R(f);N_GUARD::S(C)
- Refutation
- R(e);XS(C)
- Try
- R(B);
- Threat
- S(C)
- Vars
- S(d);XS(D)::QAR1(F)
- R(f);N_GUARD::S(C)
- Refutation
- R(e);XS(C)
- Try
- Actual
- R(B);
- Threat
- QAB1(F)
- Vars
- K(g);P_SPINR(f),S_FLIGHT,XR(B)::QAR1(F)
- S(d);XS(D)::QAB1(F)
- R(f);P_PINQ(F)::S(C)
- S(a);N_GUARD::S(D),XS(d)
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