MESON Chess Problem Database
Problem Display
PID: 133585 (K1k5/1RB2N2/P7/2b5/1rbQ3p/1n6/8/2Rr4 w - - 0 1)
Macleod, Norman Alasdair
The Problemist, 1988
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxc1
- 2.Qd8#
- 1...Re1
- 2.Qd8#
- 1...Rf1
- 2.Qd8#
- 1...Rg1
- 2.Qd8#
- 1...Rh1
- 2.Qd8#
- 1...Bd3
- 2.Qd8#
- 1...Sd2
- 2.Qd8#
- 1...Rxc1
- Tries
- 1.Bg3?
- threat
- 2.Rc7#
- 1...Rxb7
- 2.axb7#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- 1...hxg3!
- 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.Bb8?
- threat
- 2.Rc7#
- 1...Rxb7
- 2.axb7#
- 1...Bd5
- 2.Qh8#
- 1...Bd6
- 2.Qg4#
- 1...Bb6!
- threat
- 1.Bd8?
- threat
- 2.Rc7#
- 1...Rxb7
- 2.axb7#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- 1...Bd5!
- threat
- 1.Bg3?
- Keys
- 1.Bh2!
- threat
- 2.Rc7#
- 1...Rxb7
- 2.axb7#
- 1...Bd5
- 2.Qh8#
- 1...Bb6
- 2.Rb8#
- 1...Bd6
- 2.Qg4#
- threat
- 1.Bh2!
This is a version of 21161
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD,XR(A)::QAR1(B)
- R(a);N_GUARD::QAR1(B)
- B(d);S_CUTR(a)::QAR1(B)
- S(b);S_CUTR(a)::QAR1(B)
- Tries
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(c);OGATE,XR(D)::P(C),XR(c)
- B(d);P_PINR(D),P_SPINB(f),S_CUTR(a)::QAR(B)
- B(f);P_SPINB(d),S_CUTR(c)::R1(D)
- B(f);P_SPINB(d),S_CUTR(a)::QAB(B)
- Refutation
- P(e);XB(E)
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(c);OGATE,XR(D)::P(C),XR(c)
- B(d);P_PINR(D),P_SPINB(f),S_CUTR(a)::QAR(B)
- B(f);P_SPINB(d),S_CUTR(c)::R1(D)
- Refutation
- B(f);P_SPINB(d)
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(c);OGATE,XR(D)::P(C),XR(c)
- B(f);P_SPINB(d),S_CUTR(c)::R1(D)
- B(f);P_SPINB(d),S_CUTR(a)::QAB(B)
- Refutation
- B(d);P_PINR(D),P_SPINB(f)
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(c);OGATE,XR(D)::P(C),XR(c)
- B(d);P_PINR(D),P_SPINB(f),S_CUTR(a)::QAR(B)
- B(f);P_SPINB(d),S_CUTR(a)::QAB(B)
- Refutation
- B(f);P_SPINB(d)
- Try
- B(E);
- Threat
- R1(D)
- Vars
- R(c);OGATE,XR(D)::P(C),XR(c)
- B(f);P_SPINB(d),S_CUTR(c)::R1(D)
- B(f);P_SPINB(d),S_CUTR(a)::QAB(B)
- Refutation
- B(d);P_PINR(D),P_SPINB(f)
- Try
- Actual
- B(E);
- Threat
- R1(D)
- Vars
- R(c);OGATE,XR(D)::P(C),XR(c)
- B(d);P_PINR(D),P_SPINB(f),S_CUTR(a)::QAR(B)
- B(f);P_SPINB(d),S_CUTR(c)::R1(D)
- B(f);P_SPINB(d),S_CUTR(a)::QAB(B)
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