MESON Chess Problem Database
Problem Display
PID: 133405 (K1B5/N4P2/3pP3/3kq3/N3R3/1P3R2/2PP1B2/2Q5 w - - 0 1)
Burger, Robert Eugene
5th Prize, The Problemist, 2009
#2
13 + 3
| 56 | The Problemist | 2010 |
| 145 | StrateGems | 2011 |
| 23 | Die Schwalbe | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Bb7#
- 1...Qb2
- 2.Bb7#
- 1...Qh2
- 2.Sc3#
- 2.Bb7#
- 1...Qc3
- 2.Sxc3#
- 1...Qg3
- 2.Sc3#
- 2.Bb7#
- 1...Qd4
- 2.Bb7#
- 1...Qf4
- 2.Sc3#
- 2.Bb7#
- 1...Qf6
- 2.Bb7#
- 1...Qg7
- 2.Bb7#
- 1...Qf5
- 2.Sc3#
- 2.Bb7#
- 1...Qg5
- 2.Sc3#
- 2.Bb7#
- 1...Qh5
- 2.Sc3#
- 2.Bb7#
- 1...Qxe6
- 2.Sc3#
- 2.Bb7#
- 1...Qa1
- Tries
- 1.Rd3+?
- 1...Qd4
- 2.Bb7#
- 2.Rdxd4#
- 1...Kxe4!
- 1...Qd4
- 1.Rff4?
- threat
- 2.Sb6#
- 2.c4#
- 1...Qxf4
- 2.Sc3#
- 2.Bb7#
- 1...Qc3
- 2.Sxc3#
- 2.Sb6#
- 1...Qd4
- 2.Bb7#
- 1...Qxe4!
- threat
- 1.Rf5?
- threat
- 2.Sc3#
- 2.Rd4#
- 1...Qxf5
- 2.Sc3#
- 2.Bb7#
- 1...Kxe4!
- threat
- 1.Rf6?
- threat
- 2.Bb7#
- 1...Kxe4
- 2.Qh1#
- 1...Qc3
- 2.Sxc3#
- 1...Qxe4!
- threat
- 1.Qe1?
- threat
- 2.Sb6#
- 2.c4#
- 1...Qc3
- 2.Sxc3#
- 2.Sb6#
- 1...Qd4
- 2.Bb7#
- 2.Rxd4#
- 1...Qxe4!
- threat
- 1.Qh1?
- 1...Kxe4
- 2.Rf6#
- 1...Qxe4
- 2.Rf5#
- 1...Qxe6
- 2.Sc3#
- 2.Bb7#
- 2.Rd3#
- 1...Qa1
- 2.Bb7#
- 1...Qb2
- 2.Bb7#
- 1...Qh2
- 2.Sc3#
- 2.Bb7#
- 2.Rd3#
- 1...Qc3
- 2.Sxc3#
- 1...Qg3
- 2.Sc3#
- 2.Bb7#
- 1...Qd4
- 2.Bb7#
- 1...Qf4
- 2.Sc3#
- 2.Bb7#
- 2.Rd3#
- 1...Qf6
- 2.Bb7#
- 1...Qg7
- 2.Bb7#
- 1...Qf5
- 2.Sc3#
- 2.Bb7#
- 2.Rd3#
- 2.Rxf5#
- 1...Qg5
- 2.Sc3#
- 2.Bb7#
- 2.Rd3#
- 1...Qh5
- 2.Sc3#
- 2.Bb7#
- 2.Rd3#
- 1...Qh8!
- 1...Kxe4
- 1.d3?
- threat
- 2.Sb6#
- 2.c4#
- 1...Qc3
- 2.Sxc3#
- 2.Sb6#
- 1...Qd4
- 2.Bb7#
- 1...Qxe4!
- threat
- 1.d4?
- threat
- 2.Sc3#
- 1...Qxd4
- 2.Bb7#
- 1...Kxe4!
- threat
- 1.Rd3+?
- Keys
- 1.Qf1!
- threat
- 2.Qc4#
- 1...Kxe4
- 2.Qd3#
- 1...Qxe4
- 2.Qb5#
- 1...Qc3
- 2.Sxc3#
- 1...Qd4
- 2.Bb7#
- threat
- 1.Qf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(b);::B(M)
- Q(b);N_GUARD::S(G),XQ(b)
- Tries
- Try
- R(F);CHECK
- Refutation
- K(a);S_FLIGHT,XR(H)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- Q(b);::B(M)
- Refutation
- Q(b);XR(H)
- Try
- R(F);P_PINQ(b)
- Threat
- DUALS(2)
- Refutation
- K(a);N_SPINQ(b),S_FLIGHT,XR(H)
- Try
- R(F);
- Threat
- B(M)
- Vars
- K(a);OGATEB,S_FLIGHT,XR(H)::QAB(A)
- Q(b);N_GUARD::S(G),XQ(b)
- Refutation
- Q(b);XR(H)
- Try
- Q(A);
- Threat
- DUALS(2)
- Refutation
- Q(b);XR(H)
- Try
- Q(A);
- Vars
- K(a);OGATEB,S_FLIGHT,XR(H)::QAB(A)+R(F)
- Q(b);OGATEB,XR(H)::R(F)
- Q(b);::B(M)
- Q(b);N_GUARD::S(G),XQ(b)
- Refutation
- Q(b);P_PINB(M)
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- Q(b);::B(M)
- Refutation
- Q(b);XR(H)
- Try
- P(C);
- Threat
- S(G)
- Vars
- Q(b);XP(C)::B(M)
- Refutation
- K(a);S_FLIGHT,XR(H)
- Try
- Actual
- Q(A);
- Threat
- QAB1(A)
- Vars
- K(a);S_FLIGHT,XR(H)::QAB1(A)
- Q(b);SBLOCK,XR(H)::QAR2(A)
- Q(b);N_GUARD::S(G),XQ(b)
- Q(b);::B(M)
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