MESON Chess Problem Database
Problem Display
PID: 198722 (2N3KN/1p3p1B/1Q5R/R2bk3/6pr/4p1P1/5q1B/6b1 w - - 0 1)
Guidelli, Giorgio
1st Prize, 8. American Chess Congress, 1921
#2
9 + 9
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sxf7#
- 2.Qf6#
- 1...Qxg3
- 2.Bxg3#
- 2.Qf6#
- 1...Qf1
- 2.Qb2#
- 1...Qa2
- 2.Sxf7#
- 2.Qf6#
- 1...Qb2
- 2.Sxf7#
- 2.Qxb2#
- 2.Qf6#
- 1...Qc2
- 2.Sxf7#
- 2.Qf6#
- 1...Qd2
- 2.Sxf7#
- 2.Qf6#
- 1...Qe2
- 2.Sxf7#
- 2.Qf6#
- 1...Qg2
- 2.Sxf7#
- 2.Qf6#
- 1...Qxh2
- 2.Sxf7#
- 2.Qf6#
- 1...Qf3
- 2.Qb2#
- 1...Qf4
- 2.gxf4#
- 1...Qf6
- 2.Qxf6#
- 1...f5+
- 2.Re6#
- 1...f6+
- 2.Sf7#
- 1...Qe1
- Tries
- 1.Se7?
- threat
- 2.Rxd5#
- 1...f5+
- 2.Re6#
- 1...Qxg3
- 2.Bxg3#
- 2.Qf6#
- 1...Qa2
- 2.Sxf7#
- 2.Qf6#
- 1...Qd2
- 2.Sxf7#
- 2.Qf6#
- 1...Qg2
- 2.Sxf7#
- 2.Qf6#
- 1...Qf3
- 2.Qb2#
- 1...Qf5!
- threat
- 1.Qc5?
- threat
- 2.Qc3#
- 2.Qxd5#
- 1...f5+
- 2.Qxd5#
- 1...f6+
- 2.Qxd5#
- 1...Qxg3
- 2.Bxg3#
- 1...Qf5
- 2.Qxd5#
- 1...Qf6
- 2.Qxd5#
- 1...Qe1
- 2.Sxf7#
- 2.Qxd5#
- 1...Qa2
- 2.Sxf7#
- 2.Qc3#
- 1...Qb2
- 2.Sxf7#
- 2.Qxd5#
- 1...Qc2
- 2.Sxf7#
- 2.Qxd5#
- 1...Qd2
- 2.Sxf7#
- 1...Qg2
- 2.Sxf7#
- 2.Qc3#
- 1...Qf3
- 2.Qc3#
- 1...Qf4
- 2.Qxd5#
- 2.gxf4#
- 1...e2
- 2.Qxd5#
- 1...b5
- 2.Qc3#
- 1...Rxh6!
- threat
- 1.Qc6?
- threat
- 2.Rxd5#
- 2.Qxd5#
- 2.Qc3#
- 1...f5+
- 2.Qxd5#
- 1...f6+
- 2.Rxd5#
- 2.Qxd5#
- 1...Kd4
- 2.Rxd5#
- 1...Qxg3
- 2.Qf6#
- 1...Rxh6
- 2.Rxd5#
- 1...Qf5
- 2.Qxd5#
- 1...Qe1
- 2.Rxd5#
- 2.Qxd5#
- 2.Qf6#
- 1...Qa2
- 2.Qc3#
- 2.Qf6#
- 1...Qb2
- 2.Rxd5#
- 2.Qxd5#
- 2.Qf6#
- 1...Qc2
- 2.Rxd5#
- 2.Qxd5#
- 2.Qf6#
- 1...Qd2
- 2.Qf6#
- 1...Qg2
- 2.Qc3#
- 2.Qf6#
- 1...Qf3
- 2.Qc3#
- 1...Qf4
- 2.Rxd5#
- 2.Qxd5#
- 1...Qf6
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxf6#
- 1...e2
- 2.Rxd5#
- 2.Qxd5#
- 1...b5
- 2.Qc3#
- 1...bxc6!
- threat
- 1.Se7?
- Keys
- 1.Sd6!
- threat
- 2.Sc4#
- 1...f5+
- 2.Shf7#
- 1...f6+
- 2.Sdf7#
- 1...Qxg3
- 2.Bxg3#
- 1...Qf1
- 2.Qb2#
- 1...Qa2
- 2.Sdxf7#
- 2.Shxf7#
- 1...Qc2
- 2.Sdxf7#
- 2.Shxf7#
- 1...Qe2
- 2.Sdxf7#
- 2.Shxf7#
- 1...Qf4
- 2.gxf4#
- 1...Qf5
- 2.Qb2#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(b);N_GUARD::QAB(D)
- Q(b);OGATE::P(B),XQ(b)
- Q(b);N_GUARD::QAB1(D),XQ(b)
- P(i);CHECK,N_GUARD::R1(E)
- P(i);CHECK,S_CUTQ(b)::S(I)
- Tries
- Try
- S(G);
- Threat
- R1(C),XB(f)
- Vars
- P(i);CHECK,N_GUARD::R1(E)
- Q(b);N_GUARD::QAB(D)
- Refutation
- Q(b);
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- P(i);CHECK::QAR1(D),XB(f)
- Q(b);OGATE,P_SPINQ(b),XP(B)::B(A),XQ(b)
- Q(b);::QAR1(D),XB(f)
- Q(b);N_GUARD::S(I),XP(i)
- Q(b);::QAB(D)
- P(c);::QAR1(D),XB(f)
- P(h);::QAB(D)
- Refutation
- R(e);XR(E)
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- P(i);CHECK::QAR1(D),XB(f)
- K(g);N_SPINB(f),S_FLIGHT::R1(C),XB(f)
- Q(b);N_GUARD,P_SPINQ(b),XP(B)::QAB1(D)
- R(e);XR(E)::R1(C),XB(f)
- Q(b);::QAR1(D),XB(f)
- Q(b);N_GUARD::QAB1(D)
- Q(b);::QAB(D)
- P(h);N_SPINB(f)::QAB(D)
- Refutation
- P(h);XQ(D)
- Try
- Actual
- S(G);
- Threat
- S(G)
- Vars
- P(i);CHECK,S_CUTQ(b)::S(I)
- P(i);CHECK,S_CUTQ(b)::S(G)
- Q(b);OGATE,P_SPINQ(b),XP(B)::B(A),XQ(b)
- Q(b);N_GUARD::QAB(D)
- Q(b);OGATE::P(B),XQ(b)
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