MESON Chess Problem Database
Problem Display
PID: 223205 (2b5/p2P3K/3R4/p6R/rkr5/pNp2Q2/P7/4nBB1 w - - 0 1)
Ohlsson, Anders V
Nashville Daily American, 1886
#2
9 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Rb5#
- 2.Rxd4#
- 1...Re4
- 2.Bc5#
- 2.Rb5#
- 2.Qxe4#
- 1...Rf4
- 2.Bc5#
- 2.Rb5#
- 2.Qxf4#
- 1...Rg4
- 2.Bc5#
- 2.Rb5#
- 2.Qxg4#
- 1...Rh4
- 2.Bc5#
- 2.Rxh4#
- 1...Rc5
- 2.Bxc5#
- 1...Rc6
- 2.Rb5#
- 1...Rc7
- 2.Rb5#
- 1...Bb7
- 2.Qxb7#
- 1...a6
- 2.Rb6#
- 1...Rd4
- Tries
- 1.Bc5+?
- 1...Kb5
- 2.Sd4#
- 2.Bxa3#
- 2.Qc6#
- 1...Rxc5!
- 1...Kb5
- 1.Rd4?
- threat
- 2.Rxc4#
- 2.Qf8#
- 1...Rxd4
- 2.Rb5#
- 1...Sxf3
- 2.Rxc4#
- 1...Ba6
- 2.Qf8#
- 1...c2
- 2.Rxc4#
- 1...Sd3!
- threat
- 1.Qd5?
- threat
- 2.Qxc4#
- 2.Qb5#
- 1...Bxd7
- 2.Qxc4#
- 1...c2
- 2.Qxc4#
- 1...Rd4
- 2.Qxd4#
- 2.Qb5#
- 2.Qc5#
- 1...Re4
- 2.Bc5#
- 2.Qxe4#
- 2.Qb5#
- 2.Qc5#
- 1...Rf4
- 2.Bc5#
- 2.Qb5#
- 2.Qc5#
- 1...Rg4
- 2.Bc5#
- 2.Qb5#
- 2.Qc5#
- 1...Rh4
- 2.Bc5#
- 2.Rxh4#
- 2.Qb5#
- 2.Qc5#
- 1...Rc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Rc6
- 2.Qb5#
- 1...Rc7
- 2.Qb5#
- 1...Sd3
- 2.Qb5#
- 1...a6
- 2.Rb6#
- 2.Qxc4#
- 1...Ba6!
- threat
- 1.Qc6?
- threat
- 2.Rb5#
- 2.Qb5#
- 2.Qxc4#
- 1...Rxc6
- 2.Rb5#
- 1...Bxd7
- 2.Rb5#
- 2.Qxc4#
- 1...c2
- 2.Qxc4#
- 1...Rd4
- 2.Rb5#
- 2.Rxd4#
- 2.Qb5#
- 2.Qc5#
- 1...Re4
- 2.Bc5#
- 2.Rb5#
- 2.Qxe4#
- 2.Qb5#
- 2.Qc5#
- 1...Rf4
- 2.Bc5#
- 2.Rb5#
- 2.Qb5#
- 2.Qc5#
- 1...Rg4
- 2.Bc5#
- 2.Rb5#
- 2.Qb5#
- 2.Qc5#
- 1...Rh4
- 2.Bc5#
- 2.Rxh4#
- 2.Qb5#
- 2.Qc5#
- 1...Rc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Sd3
- 2.Rb5#
- 2.Qb5#
- 1...a6
- 2.Qxc4#
- 2.Qb6#
- 1...Ba6!
- threat
- 1.Qxc3+?
- 1...Rxc3
- 2.Rb5#
- 1...Kxc3!
- 1...Rxc3
- 1.Qf8?
- threat
- 2.Rd4#
- 2.Rb6#
- 1...Rd4
- 2.Rb5#
- 2.Rxd4#
- 2.Rdd5#
- 2.Rb6#
- 1...Rc5
- 2.Bxc5#
- 2.Rd4#
- 1...Rc6
- 2.Rb5#
- 2.Rd4#
- 2.Rxc6#
- 1...Sd3
- 2.Rb6#
- 1...c2!
- threat
- 1.dxc8Q?
- threat
- 2.Qfb7#
- 2.Qcb7#
- 2.Qxc4#
- 2.Qb8#
- 1...Rxc8
- 2.Rb5#
- 2.Qb7#
- 1...Sxf3
- 2.Qb7#
- 2.Qxc4#
- 2.Qb8#
- 1...Rd4
- 2.Rb5#
- 2.Rxd4#
- 2.Qfb7#
- 2.Qcb7#
- 2.Qfxc3#
- 2.Qcxc3#
- 2.Qc5#
- 2.Qb8#
- 1...Re4
- 2.Bc5#
- 2.Rb5#
- 2.Qxe4#
- 2.Qb7#
- 2.Qfxc3#
- 2.Qcxc3#
- 2.Qc5#
- 2.Qb8#
- 1...Rf4
- 2.Bc5#
- 2.Rb5#
- 2.Qfb7#
- 2.Qcb7#
- 2.Qfxc3#
- 2.Qxf4#
- 2.Qcxc3#
- 2.Qc5#
- 2.Qb8#
- 1...Rg4
- 2.Bc5#
- 2.Rb5#
- 2.Qfxg4#
- 2.Qfb7#
- 2.Qcxg4#
- 2.Qcb7#
- 2.Qfxc3#
- 2.Qcxc3#
- 2.Qc5#
- 2.Qb8#
- 1...Rh4
- 2.Bc5#
- 2.Rxh4#
- 2.Qfb7#
- 2.Qcb7#
- 2.Qfxc3#
- 2.Qcxc3#
- 2.Qc5#
- 2.Qb8#
- 1...Rc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Rc6
- 2.Rb5#
- 1...Sd3
- 2.Qfb7#
- 2.Qcb7#
- 2.Qb8#
- 1...c2
- 2.Qcb7#
- 2.Qxc4#
- 2.Qb8#
- 1...Rc7+!
- threat
- 1.dxc8R?
- threat
- 2.Rxc4#
- 2.Rb8#
- 2.Qb7#
- 1...Rxc8
- 2.Rb5#
- 2.Qb7#
- 1...Sxf3
- 2.Rxc4#
- 2.Rb8#
- 1...Rd4
- 2.Rb5#
- 2.Rxd4#
- 2.Rb8#
- 2.Qb7#
- 2.Qxc3#
- 1...Re4
- 2.Bc5#
- 2.Rb5#
- 2.Rb8#
- 2.Qxe4#
- 2.Qxc3#
- 1...Rf4
- 2.Bc5#
- 2.Rb5#
- 2.Rb8#
- 2.Qb7#
- 2.Qxc3#
- 2.Qxf4#
- 1...Rg4
- 2.Bc5#
- 2.Rb5#
- 2.Rb8#
- 2.Qxg4#
- 2.Qb7#
- 2.Qxc3#
- 1...Rh4
- 2.Bc5#
- 2.Rxh4#
- 2.Rb8#
- 2.Qb7#
- 2.Qxc3#
- 1...Rc5
- 2.Bxc5#
- 1...Rc6
- 2.Rb5#
- 1...Sd3
- 2.Rb8#
- 2.Qb7#
- 1...c2
- 2.Rxc4#
- 2.Rb8#
- 1...Rc7+!
- threat
- 1.Bc5+?
- Keys
- 1.Sc5!
- 1...Kb5
- 2.Sa6#
- 1...Rxc5
- 2.Bxc5#
- 1...Bxd7
- 2.Sa6#
- 1...Sxf3
- 2.Sd3#
- 1...Ba6
- 2.Sxa6#
- 1...Rd4
- 2.Rxd4#
- 1...Re4
- 2.Qxe4#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Qxg4#
- 1...Rh4
- 2.Rxh4#
- 1...Bb7
- 2.Qxb7#
- 1...Sc2
- 2.Sd3#
- 1...Sg2
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...c2
- 2.Qb3#
- 1...a6
- 2.Rb6#
- 1...Kb5
- 1.Sc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 13
- REMOVED MATES = 2
- Sets
- R(f);N_GUARD::B(B),XR(f)
- R(f);::R1(F)
- R(f);P_PINP(H)::R1(F)
- B(i);N_GUARD::QAR(E),XB(i)
- P(h);N_GUARD::R(G)
- Tries
- Try
- B(B);CHECK
- Refutation
- R(f);XB(B)
- Try
- R(G);P_PINR(f)
- Threat
- DUALS(2)
- Vars
- R(f);N_SPINR(f),XR(G)::R1(F)
- S(a);XQ(E)::R1(G),XR(f)
- B(i);::QAB(E)
- P(c);::R1(G),XR(f)
- Refutation
- S(a);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(i);XP(H)::QAR1(E),XR(f)
- P(c);::QAR1(E),XR(f)
- R(f);::QAR1(E)
- R(f);P_PINP(H)::QAR1(E)
- S(a);::QAR1(E)
- Refutation
- B(i);
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- R(f);XQ(E)::R1(F)
- P(c);::QAR1(E),XR(f)
- Refutation
- B(i);
- Try
- Q(E);CHECK,XP(c)
- Vars
- R(f);SBLOCK,XQ(E)::R1(F)
- Refutation
- K(e);S_FLIGHT,XQ(E)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- S(a);::QAB(E)+R(G),DCHECK
- Refutation
- P(c);
- Try
- P(H);XB(i)
- Threat
- DUALS(4)
- Vars
- R(f);::R1(F)
- Refutation
- R(f);CHECK
- Try
- P(H);XB(i)
- Threat
- DUALS(3)
- Vars
- R(f);N_GUARD::B(B),XR(f)
- R(f);::R1(F)
- Refutation
- R(f);CHECK
- Try
- Actual
- S(D);
- Vars
- K(e);P-FLIGHT,P_SPINR(f)::R(F)+S(D)
- R(f);OGATE,XS(D)::B(B),XR(f)
- B(i);N_GUARD,XP(H)::S(D)
- S(a);N_GUARD,XQ(E)::S(D)
- B(i);N_GUARD::S(D),XB(i)
- R(f);OGATEB::R(G),XR(f)
- R(f);OGATEB::QAR(E),XR(f)
- R(f);OGATEB,P_PINR(F)::R(F),XR(f)
- B(i);N_GUARD::QAR(E),XB(i)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- P(c);OGATE::QAR1(E)
- P(h);N_GUARD::R(G)
Developed and maintained by Brian Stephenson.
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