MESON Chess Problem Database
Problem Display
PID: 133961 (8/7n/3NN1pK/3Q1b2/3P2k1/1r2p1Bp/r6P/q5R1 w - - 0 1)
Morra, Juan Carlos
The Field, 1963
(First published on Thu May 9 1963)
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Bf2#
- 1...Qc3
- 2.Bf2#
- 1...Qxd4
- 2.Bf2#
- 1...Raa3
- 2.Be1#
- 1...Ra4
- 2.Be1#
- 1...Ra5
- 2.Be1#
- 1...Ra6
- 2.Be1#
- 1...Ra7
- 2.Be1#
- 1...Ra8
- 2.Be1#
- 1...Bb1
- 2.Bf2#
- 1...Bc2
- 2.Be1#
- 1...Be4
- 2.Qxe4#
- 1...Bxe6
- 2.Qe4#
- 1...g5
- 2.Qxf5#
- 1...Qb2
- Tries
- 1.Sf7?
- threat
- 2.Se5#
- 1...Qxd4
- 2.Bf2#
- 1...Bxe6
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Bb1
- 2.Bf2#
- 1...Bc2
- 2.Be1#
- 1...Bd3!
- threat
- 1.Sf7?
- Keys
- 1.Sc4!
- threat
- 2.Se5#
- 1...Qxd4
- 2.Bf2#
- 1...Bxe6
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Bb1
- 2.Bf2#
- 1...Bc2
- 2.Be1#
- 1...Bd3
- 2.Sxe3#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(a);N_GUARD::R(A)+B(C)
- Q(a);N_GUARD,XP(D)::R(A)+B(C)
- R(b);N_GUARD::R(A)+B(C)
- B(g);S_CUTQ(a)::R(A)+B(C)
- B(g);S_CUTR(b)::R(A)+B(C)
- B(g);N_GUARD::QAR2(E),XB(g)
- B(g);N_GUARD,XS(G)::QAR2(E)
- P(h);N_GUARD::QAB1(E),XB(g)
- Tries
- Try
- S(F);
- Threat
- S(F)
- Vars
- Q(a);N_GUARD,XP(D)::R(A)+B(C)
- B(g);N_GUARD,XS(G)::QAR2(E)
- B(g);N_GUARD::QAR2(E),XB(g)
- B(g);S_CUTQ(a)::R(A)+B(C)
- B(g);S_CUTR(b)::R(A)+B(C)
- Refutation
- B(g);
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- Q(a);N_GUARD,XP(D)::R(A)+B(C)
- B(g);N_GUARD,XS(G)::QAR2(E)
- B(g);N_GUARD::QAR2(E),XB(g)
- B(g);S_CUTQ(a)::R(A)+B(C)
- B(g);S_CUTR(b)::R(A)+B(C)
- B(g);S_CUTR(c)::S(F),XP(d)
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