MESON Chess Problem Database
Problem Display
PID: 53728 (3K2N1/8/1p3p2/bR3p2/4k2q/1n1N2P1/bQprB1P1/3R2B1 w - - 0 1)
Morra, Juan Carlos
Chess Life, 1955
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxg3
- 2.Sxf6#
- 1...Qh1
- 2.Sxf6#
- 1...Qh2
- 2.Sxf6#
- 1...Qh3
- 2.Sxf6#
- 1...Qf4
- 2.Sxf6#
- 1...Qg4
- 2.Sxf6#
- 1...Qh5
- 2.Sxf6#
- 1...Qh7
- 2.Sxf6#
- 1...Rxd3+
- 2.Bxd3#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 1...Qxg3
- Tries
- 1.Rxd2?
- threat
- 2.Bf3#
- 1...Qxg3
- 2.Sxf6#
- 1...Sxd2
- 2.Qd4#
- 1...Qf4
- 2.Sxf6#
- 1...Qg4
- 2.Sxf6#
- 1...Qh5
- 2.Sxf6#
- 1...Sd4
- 2.Qxd4#
- 1...Bxd2!
- threat
- 1.Qc3?
- threat
- 2.Bf3#
- 2.Qc6#
- 1...Rxd3+
- 2.Bxd3#
- 2.Qxd3#
- 1...Qxg3
- 2.Sxf6#
- 2.Qc6#
- 1...Rxe2
- 2.Qc6#
- 1...cxd1Q
- 2.Qc6#
- 1...cxd1B
- 2.Qc6#
- 1...Sc5
- 2.Bf3#
- 2.Qd4#
- 1...c1Q
- 2.Bf3#
- 1...c1R
- 2.Bf3#
- 1...Qf4
- 2.Sxf6#
- 2.Qc6#
- 1...Qg4
- 2.Sxf6#
- 2.Qc6#
- 1...Qh5
- 2.Sxf6#
- 2.Qc6#
- 1...Sa1
- 2.Bf3#
- 2.Qd4#
- 1...Sc1
- 2.Bf3#
- 2.Qd4#
- 1...Sd4
- 2.Sf2#
- 2.Qxd4#
- 1...Bxc3!
- threat
- 1.Qxc2?
- threat
- 2.Bf3#
- 2.Qc6#
- 1...Rxd3+
- 2.Bxd3#
- 2.Qxd3#
- 1...Qxg3
- 2.Sxf6#
- 2.Qc6#
- 1...Rxc2
- 2.Bf3#
- 1...Rxe2
- 2.Qxe2#
- 2.Qc6#
- 1...Sc5
- 2.Bf3#
- 1...Qf4
- 2.Sxf6#
- 2.Qc6#
- 1...Qg4
- 2.Sxf6#
- 2.Qc6#
- 1...Qh5
- 2.Sxf6#
- 2.Qc6#
- 1...Bc3
- 2.Bf3#
- 1...Sa1
- 2.Bf3#
- 1...Sc1
- 2.Bf3#
- 1...Sd4!
- threat
- 1.Rxd2?
- Keys
- 1.Qa3!
- threat
- 2.Qe7#
- 1...Rxd3+
- 2.Bxd3#
- 1...Qxg3
- 2.Sxf6#
- 1...Sc5
- 2.Bf3#
- 1...Qf4
- 2.Sxf6#
- 1...Qh7
- 2.Sxf6#
- 1...Bc3
- 2.Qa8#
- 1...Bb4
- 2.Qa8#
- 1...Sa1
- 2.Bf3#
- 1...Sc1
- 2.Bf3#
- 1...Sd4
- 2.Sf2#
- threat
- 1.Qa3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(f);N_GUARD,XP(G)::S(J),XP(j)
- Q(f);N_GUARD::S(J),XP(j)
- R(c);CHECK,OGATE,XS(F)::B(D),XR(c)
- S(d);N_GUARD::QAR1(C)
- S(d);N_GUARD,N_PINS(F)::QAR1(C),XS(d)
- Tries
- Try
- R(A);N_SPINS(F),XR(c)
- Threat
- B(D)
- Vars
- Q(f);N_GUARD,XP(G)::S(J),XP(j)
- S(d);N_GUARD,XR(A)::QAR1(C)
- Q(f);N_GUARD::S(J),XP(j)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- B(g);XR(A)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- R(c);N_PINS(F),XB(D)::QAB(C)
- P(b);XR(A)::QAB(C)
- P(b);::B(D)
- Refutation
- B(g);XQ(C)
- Try
- Q(C);XP(b)
- Threat
- DUALS(2)
- Vars
- R(c);N_PINS(F),XQ(C)::B(D)
- S(d);::B(D)
- B(g);::B(D)
- Refutation
- S(d);N_PINS(F)
- Try
- Actual
- Q(C);
- Threat
- QAR(C)
- Vars
- R(c);CHECK,OGATE,XS(F)::B(D),XR(c)
- Q(f);N_GUARD,XP(G)::S(J),XP(j)
- S(d);::B(D)
- Q(f);N_GUARD::S(J),XP(j)
- B(g);OGATE::QAB(C)
- S(d);N_PINS(F),SBLOCK::S(F)
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