MESON Chess Problem Database

Problem Display
PID: 146331 (8/3NK3/8/3k4/3P4/5R1B/8/5Q2 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

The Problemist, 2012

8/3NK3/8/3k4/3P4/5R1B/8/5Q2

#2

6 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qd3#
  • Tries
    • 1.Bf5?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Be6+?
      • 1...Kxd4
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Rb3?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kc6
        • 2.Qc4#
      • 1...Ke4!
    • 1.Rc3?
      • 1...Kxd4
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke4!
    • 1.Re3?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Qe2?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Qb5+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Ke4!
    • 1.Qa6?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Ke4!
  • Keys
    • 1.Bg2!
      • threat
        • 2.Rf4#
      • 1...Kxd4
        • 2.Qd3#
      • 1...Ke4
        • 2.Rd3#
      • 1...Kc6
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(C);
    • Threat
      • B(C)+R(B)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • K(a);S_FLIGHT::B(C)+R(B)
      • K(a);S_FLIGHT::B(C)+R(B),DCHECK
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