MESON Chess Problem Database

Problem Display
PID: 5144 (8/1RNR4/2k5/2B5/8/2Q5/2K5/8 w - - 0 1)

Levi, J

The Times, 1900

8/1RNR4/2k5/2B5/8/2Q5/2K5/8

#2

6 + 1

2838 Fun with Chess Miniatures 1996
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • 1...Kxc5
        • 2.Qc3#
      • 1...Kxb7
        • 2.Qa8#
      • 1...Kxd7!
    • 1.Qe1?
      • 1...Kxc5
        • 2.Qc3#
      • 1...Kxd7
        • 2.Qe8#
      • 1...Kxb7!
    • 1.Qb2?
      • threat
        • 2.Qb5#
      • 1...Kxc5
        • 2.Qc3#
        • 2.Qb5#
      • 1...Kxd7!
    • 1.Qd2?
      • threat
        • 2.Qd5#
      • 1...Kxc5
        • 2.Qc3#
        • 2.Qd5#
      • 1...Kxb7!
    • 1.Qa5?
      • threat
        • 2.Qb5#
      • 1...Kxb7
        • 2.Qa8#
      • 1...Kxd7!
    • 1.Qe5?
      • threat
        • 2.Qd5#
      • 1...Kxd7
        • 2.Qe8#
      • 1...Kxb7!
    • 1.Qg7?
      • 1...Kxc5
        • 2.Qc3#
      • 1...Kxb7!
    • 1.Qa3?
      • 1...Kxb7
        • 2.Qa8#
      • 1...Kxd7!
    • 1.Qb3?
      • threat
        • 2.Qd5#
        • 2.Qb5#
      • 1...Kxc5
        • 2.Qd5#
        • 2.Qc3#
        • 2.Qb5#
      • 1...Kxd7!
    • 1.Qd3?
      • threat
        • 2.Qb5#
        • 2.Qd5#
      • 1...Kxc5
        • 2.Qb5#
        • 2.Qc3#
        • 2.Qd5#
      • 1...Kxb7!
    • 1.Qe3?
      • 1...Kxd7
        • 2.Qe8#
      • 1...Kxb7!
    • 1.Qf3+?
      • 1...Kxc5
        • 2.Qd5#
        • 2.Qc3#
      • 1...Kxd7!
    • 1.Qh3?
      • 1...Kxc5
        • 2.Qc3#
      • 1...Kxb7!
  • Keys
    • 1.Qh8!
      • 1...Kxc5
        • 2.Qc3#
      • 1...Kxb7
        • 2.Qa8#
      • 1...Kxd7
        • 2.Qe8#

This anticipates 95071(1981), 156920(2014)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(B)
        • K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(B)
        • K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
  • Actual
    • Q(B);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(B)
      • K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(B)
      • K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(B)
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