MESON Chess Problem Database

Problem Display
PID: 246690 (2N5/8/8/Rp6/1k6/7B/4Q3/K7 w - - 0 1)

Parkhomenko, Nikolai A

Magadanskaya Pravda, 1998

2N5/8/8/Rp6/1k6/7B/4Q3/K7

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • 1...Kxa5
        • 2.Qa3#
      • 1...Kc5!
    • 1.Qe3?
      • 1...Kxa5
        • 2.Qa3#
      • 1...Kc4!
  • Keys
    • 1.Bf1!
      • 1...Kb3
        • 2.Qb2#
      • 1...Kc3
        • 2.Qb2#
      • 1...Kxa5
        • 2.Qxb5#
      • 1...Kc5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR2(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT,XR(D)::QAR1(B),XP(b)
      • K(a);P_SPINP(b),S_FLIGHT::QAR1(B)
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