MESON Chess Problem Database
Problem Display
PID: 68296 (3Nk1K1/4pp2/4B3/5Q2/3R2bB/p7/q3Rr2/1r2b3 w - - 0 1)
Sydenham, Colin Peter
2nd HM., BJM-60 JT, 1997
#2
7 + 9
| 102 | Probleemblad | 2006 |
| 56 | The Problemist | 2006 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
| 56 | The Problemist | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Bxf7#
- 1...Qb2
- 2.Bxf7#
- 1...Qc2
- 2.Bxf7#
- 1...Qd2
- 2.Bxf7#
- 1...Qxe2
- 2.Bxf7#
- 1...Ra1
- 2.Qb5#
- 1...Rd1
- 2.Qb5#
- 1...Rb3
- 2.Bxf7#
- 1...Rb5
- 2.Qxb5#
- 1...Rxe2
- 2.Qxf7#
- 1...Rg2
- 2.Qxf7#
- 1...Rh2
- 2.Qxf7#
- 1...Bb4
- 2.Qb5#
- 1...Bf3
- 2.Qxf7#
- 1...f6
- 2.Qg6#
- 1...Qa1
- Tries
- 1.Sc6?
- threat
- 2.Bd7#
- 2.Rd8#
- 1...Qxe6
- 2.Rd8#
- 1...Bxf5
- 2.Rd8#
- 1...fxe6
- 2.Rd8#
- 1...Qd2
- 2.Bd7#
- 2.Bxf7#
- 1...Rd1
- 2.Bd7#
- 1...Rb7
- 2.Rd8#
- 1...Rb8
- 2.Bd7#
- 1...Ba5
- 2.Bd7#
- 1...f6
- 2.Rd8#
- 2.Qg6#
- 1...Qd5!
- threat
- 1.Sxf7?
- threat
- 2.Bd7#
- 2.Rd8#
- 1...Qxe6
- 2.Rd8#
- 1...Bxf5
- 2.Rd8#
- 1...Qd2
- 2.Bd7#
- 1...Rd1
- 2.Bd7#
- 2.Qb5#
- 1...Rb7
- 2.Rd8#
- 1...Rb8
- 2.Bd7#
- 1...Ba5
- 2.Bd7#
- 1...Qd5!
- threat
- 1.Bxa2?
- threat
- 2.Bxf7#
- 2.Rxe7#
- 1...Rxe2
- 2.Bxf7#
- 2.Qxf7#
- 1...Rxf5
- 2.Rxe7#
- 1...Bxe2
- 2.Bxf7#
- 2.Qd7#
- 1...Rb3
- 2.Rxe7#
- 1...Rb7
- 2.Bxf7#
- 1...Bb4
- 2.Bxf7#
- 1...Bh5
- 2.Rxe7#
- 2.Qd7#
- 1...e5
- 2.Bxf7#
- 2.Rxe5#
- 1...f6
- 2.Bf7#
- 2.Qg6#
- 1...e6!
- threat
- 1.Sc6?
- Keys
- 1.Bb3!
- threat
- 2.Rxe7#
- 1...Qxe2
- 2.Bxf7#
- 1...Rxe2
- 2.Qxf7#
- 1...Bxe2
- 2.Qd7#
- 1...Bb4
- 2.Ba4#
- 1...e5
- 2.Rxe5#
- 1...e6
- 2.Qb5#
- 1...f6
- 2.Qg6#
- threat
- 1.Bb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- Q(c);N_GUARD::B(E),XP(h)
- Q(c);N_GUARD,XR(A)::B(E),XP(h)
- R(a);N_GUARD::QAB(D)
- R(a);S_CUTQ(c)::B(E),XP(h)
- R(a);N_GUARD::QAB(D),XR(a)
- R(d);N_GUARD,XR(A)::QAB1(D),XP(h)
- R(d);N_GUARD::QAB1(D),XP(h)
- B(b);S_CUTR(a)::QAB(D)
- B(f);S_CUTR(d)::QAB1(D),XP(h)
- P(h);OGATEB,P_PINB(E)::QAB(D)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(c);XB(E)::R1(B)
- B(f);XQ(D)::R1(B)
- P(h);XB(E)::R1(B)
- R(a);::B(E)
- R(a);::R1(B)
- B(b);::B(E)
- Refutation
- Q(c);
- Try
- S(F);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(c);P_PINS(F),XB(E)::R1(B)
- B(f);XQ(D)::R1(B)
- Q(c);::B(E)
- R(a);::R1(B)
- R(a);::B(E)
- B(b);::B(E)
- Refutation
- Q(c);
- Try
- B(E);P_PINP(g),XQ(c)
- Threat
- DUALS(2)
- Vars
- R(d);XQ(D)::R1(A),XP(g)
- R(a);::R1(A),XP(g)
- R(a);::B(E),XP(h)
- B(b);::B(E),XP(h)
- Refutation
- P(g);
- Try
- Actual
- B(E);P_PINP(g)
- Threat
- R1(A),XP(g)
- Vars
- Q(c);N_GUARD,N_SPINP(g),XR(A)::B(E),XP(h)
- R(d);N_GUARD,N_SPINP(g),XR(A)::QAB1(D),XP(h)
- B(f);N_GUARD,N_SPINP(g),XR(A)::QAB1(D)
- B(b);S_CUTR(a)::B(E)
- P(g);OGATEB::R(A),XP(g)
- P(g);S_CUTB(f)::QAB(D)
- P(h);OGATEB,P_PINB(E)::QAB(D)
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