MESON Chess Problem Database
Problem Display
PID: 83498 (1R4Q1/3pB3/4p3/p7/k6p/r2B3K/R7/r2b4 w - - 0 1)
Ellerman, Arnoldo
3rd Prize, Nebraska State Journal, 1918
#2
6 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bc2
- 2.Qg4#
- 1...Bb3
- 2.Bb5#
- 1...Bf3
- 2.Bc2#
- 1...Bg4+
- 2.Qxg4#
- 1...e5
- 2.Qc4#
- 1...d5
- 2.Qe8#
- 1...d6
- 2.Qe8#
- 1...Rb1
- Tries
- 1.Bxa3?
- 1...Bg4+
- 2.Qxg4#
- 1...Rb1
- 2.Bc1#
- 2.Bb2#
- 2.Bc5#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Rc1
- 2.Bxc1#
- 2.Bb2#
- 2.Bc5#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Bc2
- 2.Bxc2#
- 2.Qg4#
- 1...Be2
- 2.Bc2#
- 1...Bb3
- 2.Bb5#
- 1...Bf3
- 2.Bc2#
- 1...Bh5
- 2.Bc2#
- 1...e5
- 2.Bb5#
- 2.Qc4#
- 1...d5
- 2.Qe8#
- 1...d6
- 2.Qe8#
- 1...Rxa2!
- 1...Bg4+
- 1.Rxa1?
- threat
- 2.Rxa3#
- 1...Bg4+
- 2.Qxg4#
- 1...Ra2
- 2.Rxa2#
- 1...d6
- 2.Qe8#
- 1...Rxa1!
- threat
- 1.Qxe6?
- threat
- 2.Qc4#
- 2.Qxd7#
- 2.Qe4#
- 1...Bg4+
- 2.Qxg4#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bb3
- 2.Bb5#
- 2.Qxb3#
- 2.Qxd7#
- 1...Bf3
- 2.Bc2#
- 2.Bb5#
- 2.Qb3#
- 2.Qc4#
- 1...d5
- 2.Qd7#
- 2.Qc6#
- 1...d6
- 2.Qc4#
- 2.Qd7#
- 2.Qe4#
- 1...dxe6!
- threat
- 1.Qf7?
- threat
- 2.Qf4#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bb3
- 2.Bb5#
- 1...Bf3
- 2.Bc2#
- 1...e5
- 2.Qc4#
- 1...d5
- 2.Qe8#
- 1...Bg4+!
- threat
- 1.Qg1?
- threat
- 2.Qd4#
- 1...Bg4+
- 2.Qxg4#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bb3
- 2.Bb5#
- 1...e5!
- threat
- 1.Qg2?
- threat
- 2.Qe4#
- 1...Bg4+
- 2.Qxg4#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bb3
- 2.Bb5#
- 1...Bf3
- 2.Bc2#
- 2.Qc2#
- 1...d5!
- threat
- 1.Qg3?
- threat
- 2.Bb5#
- 2.Qf4#
- 1...Bg4+
- 2.Qxg4#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Bb5#
- 2.Rxa3#
- 1...Be2
- 2.Bc2#
- 2.Qf4#
- 1...Bb3
- 2.Bb5#
- 1...Bf3
- 2.Bc2#
- 1...e5
- 2.Bb5#
- 1...d5
- 2.Bb5#
- 1...d6
- 2.Qf4#
- 1...hxg3!
- threat
- 1.Qg7?
- threat
- 2.Qd4#
- 1...Bg4+
- 2.Qxg4#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bb3
- 2.Bb5#
- 1...e5!
- threat
- 1.Qc8?
- threat
- 2.Qxd7#
- 2.Qc4#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bb3
- 2.Bb5#
- 2.Qxd7#
- 1...Bf3
- 2.Bc2#
- 2.Qc2#
- 2.Qc4#
- 1...d5
- 2.Qd7#
- 2.Qc6#
- 2.Qe8#
- 1...d6
- 2.Qd7#
- 2.Qc4#
- 2.Qc6#
- 2.Qe8#
- 1...Bg4+!
- threat
- 1.Qd8?
- threat
- 2.Qxd7#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bf3
- 2.Bc2#
- 1...d5
- 2.Qd7#
- 2.Qe8#
- 1...d6
- 2.Qd7#
- 2.Qe8#
- 1...Bg4+!
- threat
- 1.Qe8?
- threat
- 2.Qxd7#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bf3
- 2.Bc2#
- 1...Bg4+!
- threat
- 1.Bxa3?
- Keys
- 1.Qg6!
- threat
- 2.Qe4#
- 1...Bg4+
- 2.Qxg4#
- 1...Rb1
- 2.Rxa3#
- 1...Rc1
- 2.Rxa3#
- 1...Bb3
- 2.Bb5#
- 1...Bf3
- 2.Bc2#
- 1...d5
- 2.Qe8#
- threat
- 1.Qg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD::R1(A),XR(c)
- B(b);N_GUARD::QAR(F)
- B(b);N_PINB(B),SBLOCK::B(B)
- B(b);N_PINB(B)::B(B)
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- P(g);OGATE::QAR2(F)
- P(h);OGATEB::QAB(F)
- Tries
- Try
- B(D);N_SPINB(B),XR(c)
- Vars
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- B(b);N_GUARD::B(B)
- B(b);SBLOCK::B(B)
- P(h);OGATEB::QAB(F)
- Refutation
- R(a);XR(A)
- Try
- R(A);XR(a)
- Threat
- R1(A),XR(c)
- Vars
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- R(c);N_PINB(B),OGATEB::R(A),XR(c)
- P(h);OGATEB::QAB(F)
- Refutation
- R(c);N_PINB(B),N_SPINR(c),XR(A)
- Try
- Q(F);XP(g)
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- R(a);N_GUARD::R1(A),XR(c)
- Refutation
- P(h);XQ(F)
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- R(a);N_GUARD::R1(A),XR(c)
- B(b);N_PINB(B),SBLOCK::B(B)
- B(b);N_PINB(B)::B(B)
- P(g);OGATE::QAR2(F)
- P(h);OGATEB::QAB(F)
- Refutation
- B(b);CHECK
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- R(a);N_GUARD::R1(A),XR(c)
- B(b);N_PINB(B),SBLOCK::B(B)
- Refutation
- P(g);
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- R(a);N_GUARD::R1(A),XR(c)
- B(b);N_PINB(B),SBLOCK::B(B)
- Refutation
- P(h);
- Try
- Q(F);N_SPINB(B)
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- R(a);N_GUARD::R1(A),XR(c)
- B(b);::B(B)
- B(b);N_GUARD::B(B)
- P(g);::B(B)
- P(h);::B(B)
- P(h);::QAR(F)
- Refutation
- P(e);XQ(F)
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- R(a);N_GUARD::R1(A),XR(c)
- B(b);N_PINB(B),SBLOCK::B(B)
- Refutation
- P(g);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD::R1(A),XR(c)
- Refutation
- B(b);CHECK
- Try
- Q(F);
- Threat
- QAB(F),XP(h)
- Vars
- R(a);N_GUARD::R1(A),XR(c)
- B(b);N_PINB(B)::B(B)
- Refutation
- B(b);CHECK
- Try
- Q(F);P_PINP(h)
- Threat
- QAB(F),XP(h)
- Vars
- R(a);N_GUARD::R1(A),XR(c)
- B(b);N_PINB(B)::B(B)
- Refutation
- B(b);CHECK
- Try
- Actual
- Q(F);
- Threat
- QAR(F)
- Vars
- B(b);CHECK,N_GUARD::QAR(F),XB(b)
- R(a);N_GUARD::R1(A),XR(c)
- B(b);N_PINB(B),SBLOCK::B(B)
- B(b);N_PINB(B)::B(B)
- P(h);OGATEB::QAB(F)
Developed and maintained by Brian Stephenson.
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CSS/Javascript (jQuery, Bootstrap & DataTables).