MESON Chess Problem Database
Problem Display
PID: 133584 (K1k5/1RB2N2/P7/2b5/2bQ4/8/6p1/1rRr2q1 w - - 0 1)
Macleod, Norman Alasdair
The Problemist, 1987
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxc1
- 2.Qd8#
- 1...Re1
- 2.Qd8#
- 1...Rf1
- 2.Qd8#
- 1...Bd3
- 2.Qd8#
- 1...Rxc1
- Tries
- 1.Bh2?
- threat
- 2.Rc7#
- 1...Rxb7
- 2.axb7#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- 1...Qxh2!
- threat
- 1.Bf4?
- threat
- 2.Rc7#
- 1...Rxb7
- 2.axb7#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Rb8#
- 1...Bd6!
- threat
- 1.Be5?
- threat
- 2.Rc7#
- 1...Rxb7
- 2.axb7#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- 1...Bd5!
- threat
- 1.Bh2?
- Keys
- 1.Bg3!
- threat
- 2.Rc7#
- 1...Rxb7
- 2.axb7#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- threat
- 1.Bg3!
This is a version of 21161
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD,XR(A)::QAR1(B)
- R(b);N_GUARD::QAR1(B)
- B(e);S_CUTR(b)::QAR1(B)
- Tries
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(a);OGATE,XR(D)::P(C),XR(a)
- B(e);P_PINR(D),P_SPINB(f),S_CUTR(b)::QAR(B)
- B(f);P_SPINB(e),S_CUTR(a)::R1(D)
- B(f);P_SPINB(e),S_CUTR(b)::QAB(B)
- Refutation
- Q(c);XB(E)
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(a);OGATE,XR(D)::P(C),XR(a)
- B(e);P_PINR(D),P_SPINB(f),S_CUTR(b)::QAR(B)
- B(f);P_SPINB(e),S_CUTR(a)::R1(D)
- Refutation
- B(f);P_SPINB(e)
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(a);OGATE,XR(D)::P(C),XR(a)
- B(f);P_SPINB(e),S_CUTR(a)::R1(D)
- B(f);P_SPINB(e),S_CUTR(b)::QAB(B)
- Refutation
- B(e);P_PINR(D),P_SPINB(f)
- Try
- Actual
- B(E);
- Threat
- R1(D)
- Vars
- R(a);OGATE,XR(D)::P(C),XR(a)
- B(e);P_PINR(D),P_SPINB(f),S_CUTR(b)::QAR(B)
- B(f);P_SPINB(e),S_CUTR(a)::R1(D)
- B(f);P_SPINB(e),S_CUTR(b)::QAB(B)
Developed and maintained by Brian Stephenson.
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