MESON Chess Problem Database
Problem Display
PID: 78394 (5R2/B6K/b1p3Bn/8/Q1P3N1/6p1/r1p1k3/1NR5 w - - 0 1)
Morra, Juan Carlos
The Tablet, 1959
(First published on Sat Jan 17 1959)
#2
9 + 7
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxc2#
- 1...Ra3
- 2.Qxc2#
- 1...Bxc4
- 2.Qxc4#
- 1...cxb1Q
- 2.Qd1#
- 1...cxb1S
- 2.Qd1#
- 1...cxb1B
- 2.Qd1#
- 1...cxb1R
- 2.Qd1#
- 1...g2
- 2.Rf2#
- 1...c5
- 2.Qe8#
- 1...Ra1
- Tries
- 1.Se5?
- threat
- 2.Bd3#
- 1...Bxc4
- 2.Qxc4#
- 1...cxb1Q
- 2.Qd1#
- 1...cxb1S
- 2.Qd1#
- 1...cxb1B
- 2.Qd1#
- 1...cxb1R
- 2.Qd1#
- 1...Ra3
- 2.Qxc2#
- 1...Sf5
- 2.Bh5#
- 1...c5!
- threat
- 1.Rff1?
- threat
- 2.Rce1#
- 1...cxb1Q
- 2.Qd1#
- 1...cxb1S
- 2.Qd1#
- 1...cxb1B
- 2.Qd1#
- 1...cxb1R
- 2.Qd1#
- 1...Sf5!
- threat
- 1.Qb3?
- threat
- 2.Bd3#
- 2.Re8#
- 2.Qd3#
- 2.Qe3#
- 2.Qf3#
- 1...Bxc4
- 2.Qxc4#
- 2.Qe3#
- 2.Qf3#
- 1...Sxg4
- 2.Bd3#
- 2.Qd3#
- 2.Qf3#
- 1...cxb1Q
- 2.Qd1#
- 2.Qe3#
- 1...cxb1S
- 2.Qd1#
- 2.Qd3#
- 2.Qe3#
- 1...cxb1B
- 2.Qd1#
- 2.Qe3#
- 1...cxb1R
- 2.Qd1#
- 2.Qd3#
- 2.Qe3#
- 1...Ra3
- 2.Bd3#
- 2.Re8#
- 2.Qxc2#
- 1...Ra5
- 2.Bd3#
- 2.Qxc2#
- 2.Qd3#
- 2.Qe3#
- 2.Qf3#
- 1...Bc8
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 2.Qf3#
- 1...Sf7
- 2.Qd3#
- 2.Qe3#
- 1...Sg8
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 2.Qf3#
- 1...Sf5!
- threat
- 1.Qxc6?
- threat
- 2.Re8#
- 2.Qg2#
- 2.Qf3#
- 2.Qe4#
- 2.Qe8#
- 2.Qe6#
- 1...Bxc4
- 2.Qg2#
- 2.Qf3#
- 2.Qe4#
- 2.Qxc4#
- 1...Sxg4
- 2.Qf3#
- 1...cxb1Q
- 2.Qg2#
- 1...cxb1S
- 2.Qg2#
- 1...cxb1B
- 2.Qg2#
- 1...cxb1R
- 2.Qg2#
- 1...Ra3
- 2.Qg2#
- 1...Ra5
- 2.Qg2#
- 2.Qf3#
- 2.Qe4#
- 1...Bb5
- 2.Re8#
- 2.Qg2#
- 2.Qf3#
- 2.Qe4#
- 2.Qe6#
- 1...Bb7
- 2.Re8#
- 1...Bc8
- 2.Qg2#
- 2.Qf3#
- 2.Qe4#
- 1...Sf7
- 2.Qg2#
- 2.Qe4#
- 1...Sg8
- 2.Qg2#
- 2.Qf3#
- 2.Qe4#
- 2.Qe6#
- 1...g2
- 2.Rf2#
- 2.Re8#
- 2.Qxg2#
- 2.Qf3#
- 2.Qe4#
- 2.Qe8#
- 2.Qe6#
- 1...Sf5!
- threat
- 1.Se5?
- Keys
- 1.Sf2!
- threat
- 2.Bd3#
- 1...Bxc4
- 2.Qxc4#
- 1...cxb1Q
- 2.Qd1#
- 1...cxb1S
- 2.Qd1#
- 1...cxb1B
- 2.Qd1#
- 1...cxb1R
- 2.Qd1#
- 1...gxf2
- 2.Rxf2#
- 1...Sf5
- 2.Bh5#
- 1...Sf7
- 2.Bh5#
- 1...c5
- 2.Qe8#
- 1...Ra3
- 2.Qxc2#
- threat
- 1.Sf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(a);N_GUARD::QAR2(C),XP(b)
- B(e);OGATE,XP(D)::QAB(C),XB(e)
- P(b);OGATE,P_PINB(F),XS(A)::QAB1(C)
- P(b);OGATE,XS(A)::QAB1(C)
- P(d);N_GUARD::R1(I)
- P(f);OGATE::QAR(C)
- Tries
- Try
- S(E);
- Threat
- B(F)
- Vars
- B(e);OGATE,XP(D)::QAB(C),XB(e)
- P(b);OGATE,P_PINB(F),XS(A)::QAB1(C)
- P(b);OGATE,XS(A)::QAB1(C)
- R(a);N_GUARD::QAR2(C),XP(b)
- S(g);N_GUARD::B(F)
- Refutation
- P(f);
- Try
- R(I);
- Threat
- R1(B)
- Vars
- P(b);OGATE,P_PINB(F),XS(A)::QAB1(C)
- P(b);OGATE,XS(A)::QAB1(C)
- Refutation
- S(g);
- Try
- Q(C);
- Threat
- DUALS(5)
- Refutation
- S(g);
- Try
- Q(C);XP(f)
- Threat
- DUALS(6)
- Vars
- S(g);XS(E)::QAB1(C)
- P(b);P_PINB(F),XS(A)::QAR2(C)
- P(b);XS(A)::QAR2(C)
- R(a);::QAR2(C)
- B(e);::R(I)
- Refutation
- S(g);
- Try
- Actual
- S(E);
- Threat
- B(F)
- Vars
- B(e);OGATE,XP(D)::QAB(C),XB(e)
- P(b);OGATE,P_PINB(F),XS(A)::QAB1(C)
- P(b);OGATE,XS(A)::QAB1(C)
- P(d);OGATE,XS(E)::R1(I),XP(d)
- S(g);N_GUARD::B(F)
- P(f);OGATE::QAR(C)
- R(a);N_GUARD::QAR2(C),XP(b)
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