MESON Chess Problem Database
Problem Display
PID: 79345 (1R5r/kB1N4/p5r1/8/8/8/8/KQ5b w - - 0 1)
Dugas, Eugene Albert
The Tablet, 1964
(First published on Sat Feb 22 1964)
#2
5 + 5
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Qxg1#
- 1...Rg2
- 2.Qb6#
- 1...Rg3
- 2.Qb6#
- 1...Rg4
- 2.Qb6#
- 1...Rg5
- 2.Qb6#
- 1...Rb6
- 2.Qxb6#
- 1...Rg7
- 2.Qb6#
- 1...Rgg8
- 2.Qb6#
- 1...Rh2
- 2.Ra8#
- 1...Rh3
- 2.Ra8#
- 1...Rh4
- 2.Ra8#
- 1...Rh5
- 2.Ra8#
- 1...Rh6
- 2.Ra8#
- 1...Rh7
- 2.Ra8#
- 1...Bc6
- 2.Qb6#
- 1...Bxb7
- 2.Qxb7#
- 1...Rg1
- Tries
- 1.Bxh1?
- threat
- 2.Qb7#
- 1...Rxb8
- 2.Qxb8#
- 1...Rg1
- 2.Qxg1#
- 1...Rb6
- 2.Qxb6#
- 1...Rxh1!
- threat
- 1.Bg2?
- threat
- 2.Qb7#
- 1...Rxb8
- 2.Qxb8#
- 1...Rb6
- 2.Qxb6#
- 1...Bxg2!
- threat
- 1.Bf3?
- threat
- 2.Qb7#
- 1...Rxb8
- 2.Qxb8#
- 1...Rg1
- 2.Qxg1#
- 1...Rb6
- 2.Qxb6#
- 1...Bxf3!
- threat
- 1.Be4?
- threat
- 2.Qb7#
- 1...Rxb8
- 2.Qxb8#
- 1...Rg1
- 2.Qxg1#
- 1...Rb6
- 2.Qxb6#
- 1...Bxe4!
- threat
- 1.Bd5?
- threat
- 2.Qb7#
- 1...Rxb8
- 2.Qxb8#
- 1...Rg1
- 2.Qxg1#
- 1...Rb6
- 2.Qxb6#
- 1...Bxd5!
- threat
- 1.Rxh8?
- threat
- 2.Ra8#
- 1...Rb6
- 2.Qxb6#
- 1...Rg8
- 2.Qb6#
- 1...Bxb7!
- threat
- 1.Qxg6?
- threat
- 2.Qg1#
- 2.Qxa6#
- 2.Qb6#
- 1...Rxb8
- 2.Qxa6#
- 2.Qb6#
- 1...Bxb7
- 2.Qg1#
- 2.Qb6#
- 1...Rh2
- 2.Qxa6#
- 2.Qb6#
- 1...Rh3
- 2.Qxa6#
- 2.Qb6#
- 1...Rh4
- 2.Qxa6#
- 2.Qb6#
- 1...Rh5
- 2.Qxa6#
- 2.Qb6#
- 1...Rc8
- 2.Qxa6#
- 2.Qb6#
- 1...Re8
- 2.Qxa6#
- 2.Qb6#
- 1...Rf8
- 2.Qxa6#
- 2.Qb6#
- 1...Rg8
- 2.Qxa6#
- 2.Qb6#
- 1...Bg2
- 2.Qxa6#
- 2.Qb6#
- 1...Bc6
- 2.Qg1#
- 1...a5
- 2.Qg1#
- 2.Qa6#
- 2.Qb6#
- 1...Rh6!
- threat
- 1.Qg1+?
- 1...Rb6
- 2.Qxb6#
- 1...Rxg1+!
- 1...Rb6
- 1.Bxh1?
- Keys
- 1.Bc6!
- threat
- 2.Qb6#
- 2.Qb7#
- 1...Rxc6
- 2.Qb7#
- 1...Rxb8
- 2.Qxb8#
- 1...Bxc6
- 2.Qb6#
- 1...Rg1
- 2.Qxg1#
- threat
- 1.Bc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 14
- Sets
- R(c);N_GUARD,P_PINQ(B)::QAB(B),XR(c)
- R(c);N_GUARD::QAB1(B)
- R(c);N_GUARD::QAB1(B),XR(c)
- R(e);N_GUARD::R1(E)
- R(e);N_GUARD,SBLOCK::R1(E)
- B(a);S_CUTR(c)::QAB1(B)
- B(a);OGATE,XB(C)::QAR1(B),XB(a)
- Tries
- Try
- B(C);XB(a)
- Threat
- QAR1(B)
- Vars
- R(e);OGATE,XR(E)::QAB1(B),XR(e)
- R(c);N_GUARD,P_PINQ(B)::QAB(B),XR(c)
- R(c);N_GUARD::QAB1(B),XR(c)
- Refutation
- R(e);P_PINQ(B),XB(C)
- Try
- B(C);
- Threat
- QAR1(B)
- Vars
- R(e);OGATE,XR(E)::QAB1(B),XR(e)
- R(c);N_GUARD::QAB1(B),XR(c)
- Refutation
- B(a);XB(C)
- Try
- B(C);
- Threat
- QAR1(B)
- Vars
- R(e);OGATE,XR(E)::QAB1(B),XR(e)
- R(c);N_GUARD,P_PINQ(B)::QAB(B),XR(c)
- R(c);N_GUARD::QAB1(B),XR(c)
- Refutation
- B(a);XB(C)
- Try
- B(C);
- Threat
- QAR1(B)
- Vars
- R(e);OGATE,XR(E)::QAB1(B),XR(e)
- R(c);N_GUARD,P_PINQ(B)::QAB(B),XR(c)
- R(c);N_GUARD::QAB1(B),XR(c)
- Refutation
- B(a);XB(C)
- Try
- B(C);
- Threat
- QAR1(B)
- Vars
- R(e);OGATE,XR(E)::QAB1(B),XR(e)
- R(c);N_GUARD,P_PINQ(B)::QAB(B),XR(c)
- R(c);N_GUARD::QAB1(B),XR(c)
- Refutation
- B(a);XB(C)
- Try
- R(E);XR(e)
- Threat
- R1(E)
- Vars
- R(c);N_GUARD::QAB1(B),XR(c)
- R(c);N_GUARD::QAB1(B)
- Refutation
- B(a);XB(C)
- Try
- Q(B);XR(c)
- Threat
- DUALS(3)
- Vars
- B(a);::QAB(B)
- Refutation
- R(e);
- Try
- Q(B);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAB1(B),XR(c)
- Refutation
- R(c);CHECK,XQ(B)
- Try
- Actual
- B(C);
- Threat
- DUALS(2)
- Vars
- R(c);XB(C)::QAR1(B)
- R(e);OGATE,XR(E)::QAB1(B),XR(e)
- B(a);XB(C)::QAB1(B)
- R(c);N_GUARD,P_PINQ(B)::QAB(B),XR(c)
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