MESON Chess Problem Database

Problem Display
PID: 102917 (8/B7/2N2K2/1k6/6B1/8/2P5/4Q3 w - - 0 1)

Usmanov, Rashid R

Shumarin-65, 2006

8/B7/2N2K2/1k6/6B1/8/2P5/4Q3

#2

6 + 1

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qb4#
      • 2.Qa5#
  • Tries
    • 1.Be2+?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa5#
        • 2.Qa1#
      • 1...Kxc6!
    • 1.Bf3?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa5#
      • 1...Kc4
        • 2.Qb4#
      • 1...Ka6!
    • 1.Qd2?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa5#
      • 1...Kc4
        • 2.Be2#
        • 2.Qd3#
      • 1...Kxc6
        • 2.Qd7#
      • 1...Ka6!
    • 1.Qc3?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa5#
        • 2.Qb3#
      • 1...Ka6!
    • 1.Qb4+?
      • 1...Ka6
        • 2.Be2#
        • 2.Bc8#
        • 2.Qb6#
      • 1...Kxc6!
    • 1.Qa5+?
      • 1...Kc4
        • 2.Se5#
        • 2.Be2#
        • 2.Be6#
        • 2.Qc5#
      • 1...Kxc6!
    • 1.Qb1+?
      • 1...Ka4
        • 2.Qb3#
        • 2.Qb4#
      • 1...Kc4
        • 2.Qb3#
      • 1...Ka6
        • 2.Be2#
        • 2.Bc8#
        • 2.Qb6#
      • 1...Kxc6!
    • 1.Qf1+?
      • 1...Ka4
        • 2.Qa6#
      • 1...Kxc6!
    • 1.Qe2+?
      • 1...Ka4
        • 2.Qa6#
      • 1...Kxc6!
    • 1.Qe3?
      • 1...Ka4
        • 2.Qb3#
      • 1...Kc4
        • 2.Qc5#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kxc6!
    • 1.Qe5+?
      • 1...Ka4
        • 2.Qa5#
      • 1...Kc4
        • 2.Be2#
        • 2.Be6#
        • 2.Qc5#
      • 1...Ka6
        • 2.Bc8#
      • 1...Kxc6!
    • 1.Qe6?
      • 1...Ka4
        • 2.Qb3#
      • 1...Ka6!
  • Keys
    • 1.Qe7!
      • 1...Ka4
        • 2.Qb4#
      • 1...Kc4
        • 2.Qc5#
      • 1...Ka6
        • 2.Be2#
      • 1...Kxc6
        • 2.Qd7#

Anticipated by 155861(1966)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::B(C)
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
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