MESON Chess Problem Database

Problem Display
PID: 232981 (3K4/8/N7/3Q4/8/k2qR3/8/1B6 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2000

3K4/8/N7/3Q4/8/k2qR3/8/1B6

#2

5 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb3
      • 2.Qxb3#
    • 1...Qc3
      • 2.Qa2#
    • 1...Qxe3
      • 2.Qa2#
  • Tries
    • 1.Bxd3?
      • 1...Ka4
        • 2.Bc2#
        • 2.Qa2#
      • 1...Kb2!
    • 1.Rxd3+?
      • 1...Ka4
        • 2.Bc2#
      • 1...Kb2!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Rxd3#
      • 1...Kb3
        • 2.Rxd3#
      • 1...Qxe3
        • 2.Qb4#
      • 1...Qc3
        • 2.Qb4#
      • 1...Qb3
        • 2.Qa1#

This anticipates 27358(2001)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_PINQ(C)::QAR1(C),XQ(b)
    • Q(b);N_PINQ(C)::QAR1(C)
    • Q(b);N_PINQ(C),N_SPINQ(b),XR(B)::QAR1(C)
  • Tries
    • Try
      • B(A);N_SPINQ(C),XQ(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);CHECK,N_SPINQ(C),XQ(b)
      • Vars
        • K(a);P-FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • R(B),XQ(b)
    • Vars
      • K(a);P-FLIGHT::R(B),XQ(b)
      • Q(b);N_PINQ(C),N_SPINQ(b),XR(B)::QAB1(C)
      • Q(b);N_PINQ(C)::QAB1(C)
      • Q(b);N_PINQ(C)::QAR2(C)
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