MESON Chess Problem Database
Problem Display
PID: 263898 (5K1B/5Q2/n1p5/2N1R1Pp/3k4/n1N2p2/1Pr5/1Bb5 w - - 0 1)
Brogi, Giuseppe
To Mat, 1961
#2
9 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rd2
- 2.Sb3#
- 2.Qf4#
- 1...Re2
- 2.Sb3#
- 1...Rf2
- 2.Sb3#
- 1...Rg2
- 2.Sb3#
- 1...Rh2
- 2.Sb3#
- 1...Be3
- 2.Rf5#
- 1...Bf4
- 2.Qxf4#
- 1...Rd2
- Tries
- 1.Se2+?
- 1...Rxe2
- 2.Sb3#
- 1...fxe2!
- 1...Rxe2
- 1.S3a4?
- threat
- 2.Re1#
- 2.Re2#
- 2.Re4#
- 2.Re7#
- 2.Re8#
- 1...Rxc5
- 2.Re4#
- 1...Bxg5
- 2.Re4#
- 1...Re2
- 2.Sb3#
- 2.Rxe2#
- 2.Re4#
- 1...Be3
- 2.Re4#
- 2.Rf5#
- 2.Re7#
- 2.Re8#
- 1...Bf4
- 2.Re4#
- 2.Qxf4#
- 1...Sc4
- 2.Re4#
- 1...Sxc5!
- threat
- 1.Sb5+?
- 1...cxb5
- 2.Qd5#
- 1...Sxb5!
- 1...cxb5
- 1.Qe6?
- threat
- 2.Rf5#
- 1...Bxg5
- 2.Rxg5#
- 1...Sxc5
- 2.Re3#
- 1...Re2
- 2.Sb3#
- 1...Sc4
- 2.Rd5#
- 1...Bf4!
- threat
- 1.Qg6?
- threat
- 2.Qd3#
- 2.Qe4#
- 1...Kc4
- 2.Qe4#
- 1...Rxb2
- 2.Qd3#
- 1...Rxc3
- 2.Qe4#
- 1...Bxb2
- 2.Qd3#
- 1...Rd2
- 2.Qe4#
- 1...Re2
- 2.Qd3#
- 1...Sb4
- 2.Qe4#
- 1...Sxc5!
- threat
- 1.Qxf3?
- threat
- 2.Qe4#
- 2.Qd3#
- 1...Kc4
- 2.Qe4#
- 1...Rxb2
- 2.Qd3#
- 1...Rxc3
- 2.Qe4#
- 2.Qxc3#
- 1...Bxb2
- 2.Qd3#
- 1...Sxc5
- 2.Re4#
- 1...Rd2
- 2.Qe4#
- 2.Qf4#
- 1...Re2
- 2.Qd3#
- 1...Be3
- 2.Qe4#
- 1...Sb4
- 2.Qe4#
- 1...Rf2!
- threat
- 1.Qf5?
- threat
- 2.Re4#
- 2.Qd3#
- 2.Qe4#
- 1...Kc4
- 2.Re4#
- 2.Qe4#
- 1...Rxb2
- 2.Re4#
- 2.Qd3#
- 1...Rxc3
- 2.Re4#
- 2.Qe4#
- 1...Bxb2
- 2.Re4#
- 2.Qd3#
- 1...Rd2
- 2.Re4#
- 2.Qe4#
- 2.Qf4#
- 1...Re2
- 2.Re4#
- 2.Qd3#
- 1...Sb4
- 2.Re4#
- 2.Qe4#
- 1...Sxc5!
- threat
- 1.Qh7?
- threat
- 2.Qd3#
- 2.Qe4#
- 1...Kc4
- 2.Qe4#
- 1...Rxb2
- 2.Qd3#
- 1...Rxc3
- 2.Qe4#
- 1...Bxb2
- 2.Qd3#
- 1...Rd2
- 2.Qe4#
- 1...Re2
- 2.Qd3#
- 1...Sb4
- 2.Qe4#
- 1...Sxc5!
- threat
- 1.Se2+?
- Keys
- 1.Sd1!
- threat
- 2.Rf5#
- 1...Rxc5
- 2.Re4#
- 1...Bxg5
- 2.Rxg5#
- 1...Sxc5
- 2.Re3#
- 1...Re2
- 2.Sb3#
- 1...Bf4
- 2.Qxf4#
- 1...Sc4
- 2.Rd5#
- threat
- 1.Sd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(b);::S(D)
- B(a);SBLOCK::B(I)+R(E)
- B(a);N_GUARD::QAR2(G),XB(a)
- Tries
- Try
- S(C);CHECK
- Vars
- R(b);XS(C)::S(D)
- Refutation
- P(d);XS(C)
- Try
- S(C);
- Threat
- DUALS(5)
- Vars
- R(b);XS(D)::B(I)+R(E),DCHECK
- B(a);XP(F)::B(I)+R(E),DCHECK
- S(c);::B(I)+R(E),DCHECK
- Refutation
- S(g);XS(D)
- Try
- S(C);CHECK
- Vars
- P(h);XS(C)::QAR1(G)
- Refutation
- S(c);XS(C)
- Try
- Q(G);
- Threat
- B(I)+R(E)
- Vars
- B(a);OGATE,XP(F)::B(I)+R(E),XB(a)
- S(g);SBLOCK,XS(D)::B(I)+R(E)
- R(b);::S(D)
- S(c);SBLOCK::B(I)+R(E),DCHECK
- Refutation
- B(a);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- K(e);P-FLIGHT::QAR2(G)
- R(b);XP(B)::QAR1(G)
- R(b);XS(C)::QAR1(G)
- B(a);XP(B)::QAR1(G)
- R(b);::QAR1(G)
- S(g);::QAR1(G)
- Refutation
- S(g);XS(D)
- Try
- Q(G);XP(d)
- Threat
- DUALS(2)
- Vars
- K(e);P-FLIGHT::QAR2(G)
- R(b);XP(B)::QAR1(G)
- B(a);XP(B)::QAR1(G)
- S(g);SBLOCK,XS(D)::B(I)+R(E),DCHECK
- R(b);::QAR1(G)
- B(a);::QAR1(G)
- S(g);::QAR1(G)
- Refutation
- R(b);P_PINQ(G)
- Try
- Q(G);
- Threat
- DUALS(3)
- Refutation
- S(g);XS(D)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- K(e);P-FLIGHT::QAR2(G)
- R(b);XP(B)::QAR1(G)
- R(b);XS(C)::QAR1(G)
- B(a);XP(B)::QAR1(G)
- R(b);::QAR1(G)
- S(g);::QAR1(G)
- Refutation
- S(g);XS(D)
- Try
- Actual
- S(C);
- Threat
- B(I)+R(E)
- Vars
- R(b);SBLOCK,XS(D)::B(I)+R(E),DCHECK
- B(a);OGATE,XP(F)::B(I)+R(E),XB(a)
- S(g);SBLOCK,XS(D)::B(I)+R(E)
- R(b);::S(D)
- B(a);N_GUARD::QAR2(G),XB(a)
- S(c);SBLOCK::B(I)+R(E),DCHECK
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