MESON Chess Problem Database
Problem Display
PID: 52692 (Q7/8/3K4/1k6/1rR5/4B3/8/2N5 w - - 0 1)
Lincoln, Robert A
The Problemist, 2004
(First published on Sat May 1 2004)
#2
5 + 2
| 5454 | Near Snap | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Kxc4
- 2.Qc6#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Kxc4
- Tries
- 1.Kd5?
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Rb1
- 1.Ke5?
- 1...Kxc4
- 2.Qc6#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Kxc4
- 1.Ke6?
- 1...Kxc4
- 2.Qc6#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Kxc4
- 1.Kc7?
- threat
- 2.Rc5#
- 1...Kxc4
- 2.Qc6#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4+!
- threat
- 1.Kd7?
- 1...Kxc4
- 2.Qc6#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Kxc4
- 1.Ke7?
- 1...Kxc4
- 2.Qc6#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Kxc4
- 1.Sa2?
- threat
- 2.Rxb4#
- 1...Kxc4
- 2.Qd5#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- threat
- 1.Se2?
- 1...Kxc4
- 2.Qd5#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Kxc4
- 1.Sb3?
- threat
- 2.Qc6#
- 1...Rxb3
- 2.Qa4#
- 1...Rxc4
- 2.Qa5#
- 1...Kxc4!
- threat
- 1.Bg1?
- 1...Kxc4
- 2.Qc6#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Kxc4
- 1.Bf2?
- 1...Kxc4
- 2.Qc6#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Kxc4
- 1.Bd4?
- 1...Kxc4
- 2.Qd5#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- 1...Kxc4
- 1.Qb7+?
- 1...Ka4
- 2.Qa6#
- 2.Qxb4#
- 1...Kxc4
- 2.Qc6#
- 1...Ka5!
- 1...Ka4
- 1.Qa2?
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rxc4!
- 1...Rb3
- 1.Qa3?
- threat
- 2.Rxb4#
- 1...Kxc4
- 2.Qd3#
- 1...Ra4
- 2.Qxa4#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Rxc4!
- threat
- 1.Qa5+?
- 1...Kxc4
- 2.Qc5#
- 1...Kxa5!
- 1...Kxc4
- 1.Qa7?
- threat
- 2.Rc5#
- 1...Kxc4
- 2.Qc5#
- 1...Rb1
- 2.Qa4#
- 1...Rb2
- 2.Qa4#
- 1...Rb3
- 2.Qa4#
- 1...Ra4
- 2.Qxa4#
- 1...Rxc4!
- threat
- 1.Kd5?
- Keys
- 1.Bd2!
- threat
- 2.Rxb4#
- 1...Kxc4
- 2.Qd5#
- 1...Kb6
- 2.Rxb4#
- 1...Rxc4
- 2.Qa5#
- 1...Rb1
- 2.Qc6#
- 1...Rb2
- 2.Qc6#
- 1...Rb3
- 2.Qc6#
- 1...Ra4
- 2.Qc6#
- threat
- 1.Bd2!
Anticipated by 91833(1975)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- K(D);S_FLIGHT
- Vars
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- K(D);P-FLIGHT
- Vars
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- K(D);S_FLIGHT
- Threat
- R1(C)
- Vars
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);CHECK,XR(C)
- Try
- K(D);P-FLIGHT
- Vars
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- K(D);S_FLIGHT
- Vars
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- S(A);
- Threat
- R1(C),XR(a)
- Vars
- K(b);S_FLIGHT,XR(C)::QAB1(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- S(A);
- Vars
- K(b);S_FLIGHT,XR(C)::QAB1(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- S(A);
- Threat
- QAB1(E)
- Vars
- R(a);N_GUARD,XS(A)::QAB1(E)
- R(a);SBLOCK,XR(C)::QAR1(E)
- Refutation
- K(b);S_FLIGHT,XR(C)
- Try
- B(B);
- Vars
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- B(B);
- Vars
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- B(B);
- Vars
- K(b);S_FLIGHT,XR(C)::QAB1(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- Q(E);CHECK
- Vars
- K(b);S_FLIGHT,XR(C)::QAR2(E)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(E);
- Vars
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- Q(E);
- Threat
- R1(C),XR(a)
- Vars
- K(b);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- R(a);N_GUARD::QAB1(E)
- Refutation
- R(a);XR(C)
- Try
- Q(E);CHECK
- Vars
- K(b);OGATE,S_FLIGHT,XR(C)::QAR1(E)
- Refutation
- K(b);P-FLIGHT,XQ(E)
- Try
- Q(E);
- Threat
- R1(C)
- Vars
- K(b);S_FLIGHT,XR(C)::QAR1(E)
- R(a);N_GUARD::QAB1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- R(a);XR(C)
- Try
- Actual
- B(B);
- Threat
- R1(C),XR(a)
- Vars
- K(b);S_FLIGHT,XR(C)::QAB1(E)
- K(b);P-FLIGHT::R(C),XR(a)
- R(a);SBLOCK,XR(C)::QAR1(E)
- R(a);::QAB1(E)
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