MESON Chess Problem Database

Problem Display
PID: 246615 (8/1K6/8/2kp4/3R1N2/8/1P3Q2/8 w - - 0 1)

Chistyakov, Nikolay

Magadanskaya Pravda, 1989

8/1K6/8/2kp4/3R1N2/8/1P3Q2/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qb4#
      • 1...Kb5
        • 2.Qb4#
      • 1...Kd6
        • 2.Rxd5#
      • 1...Kxd4!
    • 1.Qe3?
      • 1...Kd6
        • 2.Rxd5#
      • 1...Kb5!
    • 1.Qd2?
      • threat
        • 2.Qb4#
      • 1...Kb5
        • 2.Qb4#
      • 1...Kd6!
  • Keys
    • 1.Qe2!
      • 1...Kxd4
        • 2.Se6#
      • 1...Kd6
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);P_SPINP(b),S_FLIGHT::R1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(B);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::R1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT,XR(C)::S(D)
      • K(a);P_SPINP(b),S_FLIGHT::R1(C),XP(b)
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