MESON Chess Problem Database
Problem Display
PID: 268296 (2R5/8/1R6/3Q3K/B7/p7/P1q5/n1k5 w - - 0 1)
MacKay, Donald
Sunday Referee, 1929
(First published on Sun Mar 10 1929)
#2
6 + 4
| 15239 | Valois Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Qd1#
- 2.Qg5#
- 1...Qc4
- 2.Qd1#
- 2.Qg5#
- 1...Qc5
- 2.Qg5#
- 1...Qc6
- 2.Qd1#
- 2.Qg5#
- 1...Qc7
- 2.Qd1#
- 2.Qg5#
- 1...Qxc8
- 2.Qd1#
- 2.Qg5#
- 1...Qc3
- Tries
- 1.Rb4?
- 1...Qxc8
- 2.Qd1#
- 2.Qg5#
- 1...Qc3
- 2.Qd1#
- 2.Qg5#
- 1...Qc4
- 2.Qd1#
- 2.Qg5#
- 1...Qc5
- 2.Qg5#
- 1...Qc6
- 2.Qd1#
- 2.Qg5#
- 1...Qc7
- 2.Qd1#
- 2.Qg5#
- 1...Sb3!
- 1...Qxc8
- 1.Rb5?
- 1...Qxc8
- 2.Qd1#
- 2.Qg5#
- 1...Qc3
- 2.Qd1#
- 2.Qg5#
- 1...Qc4
- 2.Qd1#
- 2.Qg5#
- 1...Qc5
- 2.Qg5#
- 1...Qc6
- 2.Qd1#
- 2.Qg5#
- 1...Qc7
- 2.Qd1#
- 2.Qg5#
- 1...Sb3!
- 1...Qxc8
- 1.Rb7?
- 1...Qxc8
- 2.Qd1#
- 2.Qg5#
- 1...Qc3
- 2.Qd1#
- 2.Qg5#
- 1...Qc4
- 2.Qd1#
- 2.Qg5#
- 1...Qc5
- 2.Qg5#
- 1...Qc6
- 2.Qd1#
- 2.Qg5#
- 1...Qc7
- 2.Qd1#
- 2.Qg5#
- 1...Sb3!
- 1...Qxc8
- 1.Rbb8?
- 1...Qxc8
- 2.Qd1#
- 2.Qg5#
- 1...Qc3
- 2.Qd1#
- 2.Qg5#
- 1...Qc4
- 2.Qd1#
- 2.Qg5#
- 1...Qc5
- 2.Qg5#
- 1...Qc6
- 2.Qd1#
- 2.Qg5#
- 1...Qc7
- 2.Qd1#
- 2.Qg5#
- 1...Sb3!
- 1...Qxc8
- 1.Rc3?
- 1...Qxc3
- 2.Qd1#
- 1...Sb3!
- 1...Qxc3
- 1.Rc4?
- 1...Qxc4
- 2.Qd1#
- 1...Qc3
- 2.Qd1#
- 2.Qg5#
- 1...Sb3!
- 1...Qxc4
- 1.Rcc6?
- 1...Qxc6
- 2.Qd1#
- 2.Qg5#
- 1...Qc3
- 2.Qd1#
- 2.Qg5#
- 1...Qc4
- 2.Qd1#
- 2.Qg5#
- 1...Qc5
- 2.Qg5#
- 1...Sb3!
- 1...Qxc6
- 1.Rc7?
- 1...Qxc7
- 2.Qd1#
- 1...Qc3
- 2.Qd1#
- 2.Qg5#
- 1...Qc4
- 2.Qd1#
- 2.Qg5#
- 1...Qc5
- 2.Qg5#
- 1...Qc6
- 2.Qd1#
- 2.Qg5#
- 1...Sb3!
- 1...Qxc7
- 1.Qd3?
- 1...Qxc8
- 2.Rb1#
- 2.Qd1#
- 2.Qe3#
- 1...Sb3
- 2.Qxc2#
- 1...Qc3
- 2.Rb1#
- 2.Qd1#
- 2.Qe3#
- 1...Qc4
- 2.Rb1#
- 2.Qd1#
- 2.Qe3#
- 1...Qc6
- 2.Rb1#
- 2.Qd1#
- 2.Qe3#
- 1...Qc7
- 2.Rb1#
- 2.Qd1#
- 2.Qe3#
- 1...Qc5+!
- 1...Qxc8
- 1.Qd8?
- 1...Qc5+
- 2.Qg5#
- 1...Qxc8
- 2.Qg5#
- 2.Qd1#
- 1...Qc3
- 2.Qg5#
- 2.Qd1#
- 1...Qc4
- 2.Qg5#
- 2.Qd1#
- 1...Qc6
- 2.Qg5#
- 2.Qd1#
- 1...Qc7
- 2.Qg5#
- 2.Qd1#
- 1...Sb3!
- 1...Qc5+
- 1.Rb4?
- Keys
- 1.Qg2!
- 1...Qc5+
- 2.Qg5#
- 1...Kd1
- 2.Rb1#
- 1...Qxc8
- 2.Qg5#
- 1...Sb3
- 2.Qxc2#
- 1...Qc3
- 2.Qg5#
- 1...Qc4
- 2.Qg5#
- 1...Qc6
- 2.Qg5#
- 1...Qc7
- 2.Qg5#
- 1...Qc5+
- 1.Qg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Q(c);P_PINQ(C)::QAB(C)
- Tries
- Try
- R(E);
- Vars
- Q(c);P_PINQ(C)::QAB(C)
- Refutation
- S(a);
- Try
- R(E);
- Vars
- Q(c);P_PINQ(C)::QAB(C)
- Refutation
- S(a);
- Try
- R(E);
- Vars
- Q(c);P_PINQ(C)::QAB(C)
- Refutation
- S(a);
- Try
- R(E);
- Vars
- Q(c);P_PINQ(C)::QAB(C)
- Refutation
- S(a);
- Try
- R(F);
- Vars
- Q(c);N_SPINQ(c),XR(F)::QAR1(C)
- Refutation
- S(a);
- Try
- R(F);
- Vars
- Q(c);N_SPINQ(c),XR(F)::QAR1(C)
- Refutation
- S(a);
- Try
- R(F);
- Vars
- Q(c);P_PINQ(C)::QAB(C)
- Refutation
- S(a);
- Try
- R(F);
- Vars
- Q(c);N_SPINQ(c),XR(F)::QAR1(C)
- Q(c);P_PINQ(C)::QAB(C)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- S(a);N_GUARD::QAR1(C),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- Q(C);
- Vars
- Q(c);CHECK::QAB(C)
- Refutation
- S(a);
- Try
- Actual
- Q(C);
- Vars
- Q(c);CHECK::QAB(C)
- K(b);N_GUARD,P-FLIGHT::R(E)
- Q(c);N_SPINQ(c),XR(F)::QAB(C)
- S(a);N_GUARD::QAR1(C),XQ(c)
- Q(c);::QAB(C)
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