MESON Chess Problem Database

Problem Display
PID: 234993 (2N5/8/8/3k4/6P1/1K6/4RQ2/8 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sem Shakhmatnikh not, 2017

2N5/8/8/3k4/6P1/1K6/4RQ2/8

#2

5 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rd2+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6
        • 2.Qb6#
      • 1...Ke6
        • 2.Qf5#
      • 1...Ke4!
    • 1.Qf4?
      • threat
        • 2.Qd6#
        • 2.Qc4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc6!
    • 1.Qf7+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc6!
    • 1.Qf8?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Kc6!
  • Keys
    • 1.Re6!
      • 1...Kxe6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(a);S_FLIGHT,XR(A)::QAB1(B)
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