MESON Chess Problem Database
Problem Display
PID: 275894 (5n1q/b3Q2p/6pB/3p4/1P1kN3/prpPR3/2p1B3/Kn1R4 w - - 0 1)
Ghirelli, Bruno
Probleemblad, 1953
#2
9 + 12
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Qxa7#
- 1...Qf6
- 2.Qxf6#
- 1...Qg7
- 2.Qxg7#
- 1...Qg8
- 2.Qf6#
- 1...dxe4
- 2.Qd6#
- 2.Qxe4#
- 1...Qe5
- Tries
- 1.Sd2?
- threat
- 2.Sxb3#
- 2.Sf3#
- 2.Qh4#
- 2.Qxa7#
- 1...Rxb4
- 2.Sf3#
- 2.Qxb4#
- 1...Sxd2
- 2.Qxa7#
- 1...cxd1Q
- 2.Sf3#
- 2.Qh4#
- 2.Qxa7#
- 1...cxd1B
- 2.Sf3#
- 2.Qh4#
- 2.Qxa7#
- 1...c1S
- 2.Sf3#
- 2.Qh4#
- 2.Qxa7#
- 1...Qe5
- 2.Sxb3#
- 2.Sf3#
- 2.Qxe5#
- 2.Qxa7#
- 1...Qf6
- 2.Sxb3#
- 2.Qxf6#
- 1...Qg7
- 2.Sxb3#
- 2.Sf3#
- 2.Bxg7#
- 2.Qh4#
- 2.Qxg7#
- 1...Rb2
- 2.Sf3#
- 2.Qh4#
- 2.Qxa7#
- 1...Bc5
- 2.Sxb3#
- 2.Sf3#
- 2.Qh4#
- 2.Qxc5#
- 1...Bb6
- 2.Sxb3#
- 2.Sf3#
- 2.Qh4#
- 1...Bb8
- 2.Sxb3#
- 2.Sf3#
- 2.Qc5#
- 1...Se6
- 2.Sxb3#
- 2.Sf3#
- 1...Sd7
- 2.Sxb3#
- 2.Sf3#
- 2.Qh4#
- 1...g5
- 2.Sxb3#
- 2.Sf3#
- 2.Qxa7#
- 1...cxd2!
- threat
- 1.Sf2?
- threat
- 2.Qh4#
- 2.Qxa7#
- 1...Rxb4
- 2.Qxb4#
- 1...Qe5
- 2.Qxe5#
- 2.Qxa7#
- 1...Qf6
- 2.Qxf6#
- 1...Qg7
- 2.Bxg7#
- 2.Qh4#
- 2.Qxg7#
- 1...Bc5
- 2.Qh4#
- 2.Qxc5#
- 1...Bb6
- 2.Qh4#
- 1...Bb8
- 2.Qc5#
- 1...Sd2
- 2.Qxa7#
- 1...Sd7
- 2.Qh4#
- 1...g5
- 2.Qxa7#
- 1...Se6!
- threat
- 1.Sg3?
- threat
- 2.Qh4#
- 2.Qxa7#
- 1...Rxb4
- 2.Qxb4#
- 1...Qe5
- 2.Qxe5#
- 2.Qxa7#
- 1...Qf6
- 2.Qxf6#
- 1...Qg7
- 2.Bxg7#
- 2.Qh4#
- 2.Qxg7#
- 1...Bc5
- 2.Qh4#
- 2.Qxc5#
- 1...Bb6
- 2.Qh4#
- 1...Bb8
- 2.Qc5#
- 1...Sd2
- 2.Qxa7#
- 1...Sd7
- 2.Qh4#
- 1...g5
- 2.Sf5#
- 2.Qxa7#
- 1...Se6!
- threat
- 1.Sg5?
- threat
- 2.Sf3#
- 2.Qxa7#
- 1...Rxb4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 2.Sxe6#
- 1...Qg7
- 2.Sf3#
- 2.Bxg7#
- 1...Bc5
- 2.Sf3#
- 2.Qxc5#
- 1...Bb6
- 2.Sf3#
- 1...Bb8
- 2.Sf3#
- 2.Qc5#
- 1...Sd2
- 2.Qxa7#
- 1...Sd7
- 2.Sf3#
- 2.Se6#
- 1...Qf6!
- threat
- 1.Sd6?
- threat
- 2.Sb5#
- 2.Qh4#
- 2.Qxa7#
- 1...Se6
- 2.Sb5#
- 1...Qe5
- 2.Sb5#
- 2.Qxe5#
- 2.Qxa7#
- 1...Qf6
- 2.Sb5#
- 2.Qxf6#
- 2.Qxa7#
- 1...Qg7
- 2.Sb5#
- 2.Bxg7#
- 2.Qh4#
- 2.Qxg7#
- 1...Bc5
- 2.Sb5#
- 2.Qh4#
- 1...Bb6
- 2.Sb5#
- 2.Qh4#
- 1...Bb8
- 2.Sb5#
- 2.Qh4#
- 1...Sd2
- 2.Sb5#
- 2.Qxa7#
- 1...Sd7
- 2.Sb5#
- 2.Qh4#
- 1...g5
- 2.Sb5#
- 2.Sf5#
- 2.Qxa7#
- 1...Rxb4!
- threat
- 1.Sd2?
- Keys
- 1.Sxc3!
- threat
- 2.Sb5#
- 1...Kxc3
- 2.d4#
- 1...Rxc3
- 2.Qh4#
- 1...Rxb4
- 2.Qxb4#
- 1...Sxc3
- 2.Qxa7#
- threat
- 1.Sxc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- Q(l);SBLOCK::QAB(I),XB(i)
- Q(l);N_GUARD::QAB(I),XQ(l)
- Q(l);N_GUARD::QAB(I)
- Tries
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- S(a);XS(G)::QAB(I),XB(i)
- Refutation
- P(e);XS(G)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(d);OGATE,XP(F)::QAR2(I),XR(d)
- Q(l);N_GUARD::QAB(I),XQ(l)
- B(i);::QAR(I)
- B(i);N_GUARD::QAB1(I)
- S(a);::QAB(I),XB(i)
- S(k);::QAR(I)
- P(h);::QAB(I),XB(i)
- Refutation
- S(k);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(d);OGATE,XP(F)::QAR2(I),XR(d)
- Q(l);N_GUARD::QAB(I),XQ(l)
- B(i);::QAR(I)
- B(i);N_GUARD::QAB1(I)
- S(a);::QAB(I),XB(i)
- S(k);::QAR(I)
- Refutation
- S(k);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(d);XP(F)::S(G)
- B(i);::S(G)
- S(a);::QAB(I),XB(i)
- Refutation
- Q(l);
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- S(k);::S(G)
- Refutation
- R(d);XP(F)
- Try
- Actual
- S(G);XP(e)
- Threat
- S(G)
- Vars
- K(f);OGATE,S_FLIGHT,XS(G)::R(E)+P(D)
- R(d);SBLOCK,XS(G)::QAR(I)
- R(d);OGATE,XP(F)::QAR2(I),XR(d)
- S(a);SBLOCK,XS(G)::QAB(I),XB(i)
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