MESON Chess Problem Database
Problem Display
PID: 70021 (8/8/8/8/3Q2K1/1N6/4kB2/2r2R2 w - - 0 1)
Lincoln, Robert A
Comm., The Problemist, 2006
#2
5 + 2
| 56 | The Problemist | 2007 |
| 145 | StrateGems | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qc4#
- 1...Rb1
- 2.Qc4#
- 1...Rd1
- 2.Qxd1#
- 1...Re1
- 2.Rxe1#
- 1...Rxf1
- 2.Qd2#
- 1...Rc2
- 2.Re1#
- 2.Qd1#
- 1...Rc3
- 2.Re1#
- 2.Qd1#
- 1...Rc4
- 2.Re1#
- 2.Qxc4#
- 1...Rc5
- 2.Re1#
- 2.Qd1#
- 1...Rc6
- 2.Re1#
- 2.Qd1#
- 1...Rc7
- 2.Re1#
- 2.Qd1#
- 1...Rc8
- 2.Re1#
- 2.Qd1#
- 1...Ra1
- Tries
- 1.Kg3?
- 1...Kxf1
- 2.Qd3#
- 1...Rxf1
- 2.Qd2#
- 1...Ra1
- 2.Qc4#
- 1...Rb1
- 2.Qc4#
- 1...Rd1
- 2.Qxd1#
- 1...Re1
- 2.Rxe1#
- 1...Rc2
- 2.Re1#
- 2.Qd1#
- 1...Rc4
- 2.Re1#
- 2.Qd1#
- 2.Qxc4#
- 1...Rc5
- 2.Re1#
- 2.Qd1#
- 1...Rc6
- 2.Re1#
- 2.Qd1#
- 1...Rc7
- 2.Re1#
- 2.Qd1#
- 1...Rc8
- 2.Re1#
- 2.Qd1#
- 1...Rc3+!
- 1...Kxf1
- 1.Kf4?
- 1...Rxf1
- 2.Qd2#
- 1...Ra1
- 2.Qc4#
- 1...Rb1
- 2.Qc4#
- 1...Rd1
- 2.Qxd1#
- 1...Re1
- 2.Rxe1#
- 1...Rc2
- 2.Re1#
- 2.Qd1#
- 1...Rc3
- 2.Re1#
- 2.Qd1#
- 1...Rc4
- 2.Re1#
- 2.Qxc4#
- 1...Rc5
- 2.Re1#
- 2.Qd1#
- 1...Rc6
- 2.Re1#
- 2.Qd1#
- 1...Rc7
- 2.Re1#
- 2.Qd1#
- 1...Rc8
- 2.Re1#
- 2.Qd1#
- 1...Kxf1!
- 1...Rxf1
- 1.Sd2?
- threat
- 2.Qe3#
- 1...Re1
- 2.Rxe1#
- 1...Rc3
- 2.Re1#
- 1...Rc4
- 2.Re1#
- 1...Rxf1!
- threat
- 1.Rd1?
- threat
- 2.Sxc1#
- 2.Qd2#
- 1...Ra1
- 2.Qd2#
- 1...Rb1
- 2.Qd2#
- 1...Rc2
- 2.Re1#
- 1...Rc3
- 2.Re1#
- 2.Qd2#
- 1...Rc4
- 2.Re1#
- 1...Rc5
- 2.Re1#
- 2.Qd2#
- 1...Rc6
- 2.Re1#
- 2.Qd2#
- 1...Rc7
- 2.Re1#
- 2.Qd2#
- 1...Rc8
- 2.Re1#
- 2.Qd2#
- 1...Rxd1!
- threat
- 1.Rg1?
- threat
- 2.Sxc1#
- 2.Qe3#
- 2.Qd2#
- 1...Ra1
- 2.Qe3#
- 2.Qd2#
- 1...Rb1
- 2.Qe3#
- 2.Qd2#
- 1...Rd1
- 2.Qe3#
- 1...Re1
- 2.Rxe1#
- 2.Qd2#
- 1...Rf1
- 2.Qd2#
- 1...Rc2
- 2.Re1#
- 2.Qe3#
- 1...Rc3
- 2.Re1#
- 2.Qd2#
- 1...Rc4
- 2.Re1#
- 1...Rc5
- 2.Re1#
- 2.Qe3#
- 2.Qd2#
- 1...Rc6
- 2.Re1#
- 2.Qe3#
- 2.Qd2#
- 1...Rc7
- 2.Re1#
- 2.Qe3#
- 2.Qd2#
- 1...Rc8
- 2.Re1#
- 2.Qe3#
- 2.Qd2#
- 1...Rxg1+!
- threat
- 1.Kg3?
- Keys
- 1.Bg1!
- 1...Kxf1
- 2.Qf2#
- 1...Rxf1
- 2.Qd2#
- 1...Ra1
- 2.Qc4#
- 1...Rb1
- 2.Qc4#
- 1...Rd1
- 2.Qxd1#
- 1...Re1
- 2.Rf2#
- 1...Rc2
- 2.Qd1#
- 1...Rc3
- 2.Qd1#
- 1...Rc4
- 2.Qxc4#
- 1...Rc5
- 2.Qd1#
- 1...Rc6
- 2.Qd1#
- 1...Rc7
- 2.Qd1#
- 1...Rc8
- 2.Qd1#
- 1...Kxf1
- 1.Bg1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::QAB(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- R(a);N_GUARD::R1(A),XR(a)
- R(a);SBLOCK,XR(A)::QAR1(D)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- K(b);S_FLIGHT,XR(A)::QAB(D)
- R(a);SBLOCK,XR(A)::QAR1(D)
- R(a);N_GUARD::QAB(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- R(a);N_GUARD::R1(A),XR(a)
- Refutation
- R(a);CHECK
- Try
- K(E);P-FLIGHT
- Vars
- R(a);P_PINB(B),SBLOCK,XR(A)::QAR1(D)
- R(a);N_GUARD::QAB(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- R(a);N_GUARD::R1(A),XR(a)
- Refutation
- K(b);S_FLIGHT,XR(A)
- Try
- S(C);
- Threat
- QAR1(D)
- Vars
- R(a);N_GUARD::R1(A),XR(a)
- R(a);N_GUARD::R1(A)
- R(a);N_GUARD,P_PINQ(D)::R1(A)
- Refutation
- R(a);XR(A)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(D)
- R(a);N_GUARD::R1(A)
- R(a);N_GUARD,P_PINQ(D)::R1(A)
- Refutation
- R(a);XR(A)
- Try
- R(A);
- Threat
- DUALS(3)
- Vars
- R(a);::QAR1(D)
- R(a);N_GUARD,P_PINQ(D)::R1(A)
- Refutation
- R(a);CHECK,XR(A)
- Try
- Actual
- B(B);
- Vars
- K(b);S_FLIGHT,XR(A)::QAR1(D)
- R(a);SBLOCK,XR(A)::QAR1(D)
- R(a);N_GUARD::QAB(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- R(a);SBLOCK::R1(A)
- R(a);N_GUARD::QAB1(D)
- R(a);N_GUARD,P_PINQ(D)::QAB(D),XR(a)
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