MESON Chess Problem Database
Problem Display
PID: 108901 (8/4Q3/1PN5/3p4/4Rp2/2pk1p2/R1n2P2/2K5 w - - 0 1)
Lissner, Morris
Checkmate, 1902
#2
7 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Sb4#
- 2.Rd4#
- 1...Se1
- 2.Sb4#
- 2.Rd4#
- 1...Sa3
- 2.Sb4#
- 2.Rd4#
- 1...Se3
- 2.Sb4#
- 2.Rd4#
- 1...Sb4
- 2.Sxb4#
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sa1
- Tries
- 1.Rxc2?
- threat
- 2.Sb4#
- 2.Rd4#
- 1...d4
- 2.Rxd4#
- 1...dxe4!
- threat
- 1.Rxf4?
- 1...Sd4
- 2.Se5#
- 2.Rxd4#
- 1...Sa1
- 2.Sb4#
- 2.Se5#
- 2.Rd4#
- 2.Qe3#
- 2.Qh7#
- 1...Se1
- 2.Sb4#
- 2.Se5#
- 2.Rd4#
- 2.Qe3#
- 2.Qh7#
- 1...Sa3
- 2.Sb4#
- 2.Se5#
- 2.Rd4#
- 2.Qe3#
- 2.Qh7#
- 1...Se3
- 2.Sb4#
- 2.Se5#
- 2.Rd4#
- 2.Qxe3#
- 1...Sb4
- 2.Sxb4#
- 2.Se5#
- 2.Rd4#
- 2.Qe3#
- 2.Qh7#
- 1...d4!
- 1...Sd4
- 1.Qb4?
- threat
- 2.Se5#
- 1...Sxb4
- 2.Rd4#
- 1...dxe4
- 2.Qb5#
- 1...Sd4
- 2.Rxd4#
- 2.Qxd4#
- 1...d4!
- threat
- 1.Qg5?
- 1...Kxe4
- 2.Qg6#
- 1...dxe4
- 2.Qb5#
- 1...Sd4
- 2.Rxd4#
- 1...Sa1
- 2.Rd4#
- 2.Qxd5#
- 1...Se1
- 2.Rd4#
- 2.Qxd5#
- 1...Sa3
- 2.Rd4#
- 2.Qxd5#
- 1...Se3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...d4!
- 1...Kxe4
- 1.Qd6?
- 1...Kxe4
- 2.Qg6#
- 1...Sd4
- 2.Rxd4#
- 1...Sa1
- 2.Rd4#
- 2.Qxd5#
- 1...Se1
- 2.Rd4#
- 2.Qxd5#
- 1...Sa3
- 2.Rd4#
- 2.Qxd5#
- 1...Se3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...d4!
- 1...Kxe4
- 1.Qe5?
- 1...dxe4
- 2.Qb5#
- 1...Sd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Sa1
- 2.Sb4#
- 2.Rd4#
- 2.Qd4#
- 2.Qxd5#
- 1...Se1
- 2.Sb4#
- 2.Rd4#
- 2.Qd4#
- 2.Qxd5#
- 1...Sa3
- 2.Sb4#
- 2.Rd4#
- 2.Qd4#
- 2.Qxd5#
- 1...Se3
- 2.Sb4#
- 2.Rd4#
- 2.Qd4#
- 1...Sb4
- 2.Sxb4#
- 2.Rd4#
- 2.Qd4#
- 1...d4!
- 1...dxe4
- 1.Qa7?
- 1...Kxe4
- 2.Qh7#
- 1...dxe4
- 2.Qa6#
- 1...Sd4
- 2.Rxd4#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Se3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...d4!
- 1...Kxe4
- 1.Qd7?
- 1...Kxe4
- 2.Qh7#
- 1...Sd4
- 2.Rxd4#
- 1...Sa1
- 2.Rd4#
- 2.Qxd5#
- 1...Se1
- 2.Rd4#
- 2.Qxd5#
- 1...Sa3
- 2.Rd4#
- 2.Qxd5#
- 1...Se3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...d4!
- 1...Kxe4
- 1.Rxc2?
- Keys
- 1.Qb7!
- 1...Kxe4
- 2.Qh7#
- 1...dxe4
- 2.Qa6#
- 1...Sd4
- 2.Rxd4#
- 1...d4
- 2.Se5#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Se3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Kxe4
- 1.Qb7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R1(D),XS(a)
- Tries
- Try
- R(B);XS(a)
- Threat
- DUALS(2)
- Vars
- P(f);::R1(D),XP(f)
- Refutation
- P(f);XR(D)
- Try
- R(D);XP(e)
- Refutation
- P(f);
- Try
- Q(G);
- Threat
- S(F)
- Vars
- S(a);N_GUARD,XQ(G)::R1(D)
- P(f);SBLOCK,XR(D)::QAB(G)
- Refutation
- P(f);
- Try
- Q(G);
- Vars
- K(c);OGATEB,S_FLIGHT,XR(D)::QAB(G)
- P(f);OGATE,SBLOCK,XR(D)::QAB(G)
- S(a);N_GUARD::R1(D),XS(a)
- S(a);N_GUARD::R1(D)
- Refutation
- P(f);
- Try
- Q(G);P_PINP(f)
- Vars
- K(c);N_SPINP(f),OGATEB,S_FLIGHT,XR(D)::QAB(G)
- S(a);N_GUARD,N_SPINP(f)::R1(D),XS(a)
- S(a);N_GUARD::R1(D)
- Refutation
- P(f);
- Try
- Q(G);
- Vars
- P(f);OGATE,SBLOCK,XR(D)::QAB(G)
- Refutation
- P(f);
- Try
- Q(G);
- Vars
- K(c);OGATEB,S_FLIGHT,XR(D)::QAB(G)
- P(f);SBLOCK,XR(D)::QAB(G)
- S(a);N_GUARD::R1(D),XS(a)
- S(a);N_GUARD::R1(D)
- Refutation
- P(f);
- Try
- Q(G);P_PINP(f)
- Vars
- K(c);N_SPINP(f),OGATEB,S_FLIGHT,XR(D)::QAB(G)
- S(a);N_GUARD,N_SPINP(f)::R1(D),XS(a)
- S(a);N_GUARD::R1(D)
- Refutation
- P(f);
- Try
- Actual
- Q(G);
- Vars
- K(c);OGATEB,S_FLIGHT,XR(D)::QAB(G)
- P(f);SBLOCK,XR(D)::QAB(G)
- S(a);N_GUARD::R1(D),XS(a)
- P(f);::S(F)
- S(a);N_GUARD::R1(D)
Developed and maintained by Brian Stephenson.
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