MESON Chess Problem Database

Problem Display
PID: 162322 (8/4p3/4Q3/3p3N/1P1P4/P2BP3/1RN3kB/R3K3 w Q - 0 1)

Kapustin, Fedor Mikhailovich

Permyakov, Evgeni Nikolaevich

Comm., The Problemist, 2016

8/4p3/4Q3/3p3N/1P1P4/P2BP3/1RN3kB/R3K3

#2

12 + 3

56 The Problemist 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qh3#
  • Tries
    • 1.Bf4?
      • 1...Kh1
        • 2.Kf2#
      • 1...Kf3
        • 2.Qh3#
      • 1...Kg1!
    • 1.Be5?
      • 1...Kh1
        • 2.Kf2#
      • 1...Kf3
        • 2.Qh3#
      • 1...Kg1!
    • 1.Bc7?
      • 1...Kh1
        • 2.Kf2#
      • 1...Kf3
        • 2.Qh3#
      • 1...Kg1!
    • 1.Bb8?
      • 1...Kh1
        • 2.Kf2#
      • 1...Kf3
        • 2.Qh3#
      • 1...Kg1!
    • 1.Qh3+?
      • 1...Kh1
        • 2.Kd2#
        • 2.Ke2#
        • 2.Kf2#
        • 2.Sg3#
        • 2.0-0-0#
      • 1...Kxh3!
    • 1.Qg4+?
      • 1...Kh1
        • 2.Qg1#
      • 1...Kxh2!
    • 1.Qg8+?
      • 1...Kh1
        • 2.Qg1#
      • 1...Kf3
        • 2.Qg3#
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh2!
    • 1.Qe5?
      • 1...Kh1
        • 2.Kf2#
      • 1...Kf3
        • 2.Qg3#
      • 1...Kh3
        • 2.Qg3#
      • 1...e6!
    • 1.Qg6+?
      • 1...Kh1
        • 2.Qg1#
      • 1...Kf3
        • 2.Be2#
        • 2.Qg3#
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxh2!
  • Keys
    • 1.0-0-0!
      • 1...Kf2
        • 2.Se1#
      • 1...Kxh2
        • 2.Sa1#
      • 1...Kf3
        • 2.Se1#

This is after

After Michael Lipton.

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(L)
  • Tries
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::R(A)+K(B)
        • K(a);S_FLIGHT::QAR2(L)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::R(A)+K(B)
        • K(a);S_FLIGHT::QAR2(L)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::R(A)+K(B)
        • K(a);S_FLIGHT::QAR2(L)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::R(A)+K(B)
        • K(a);S_FLIGHT::QAR2(L)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(L);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(L)
    • Try
      • Q(L);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(L)
      • Refutation
        • K(a);P-FLIGHT,XB(E)
    • Try
      • Q(L);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(L)
        • K(a);S_FLIGHT::QAR1(L)
      • Refutation
        • K(a);P-FLIGHT,XB(E)
    • Try
      • Q(L);
      • Vars
        • K(a);S_FLIGHT::R(A)+K(B)
        • K(a);S_FLIGHT::QAR1(L)
      • Refutation
        • P(c);
    • Try
      • Q(L);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(L)
        • K(a);S_FLIGHT::QAR1(L)
      • Refutation
        • K(a);P-FLIGHT,XB(E)
  • Actual
    • K(B);0-0-0
    • Vars
      • K(a);P-FLIGHT::R(C)+S(D)
      • K(a);P-FLIGHT,XB(E)::R(C)+S(D)
      • K(a);S_FLIGHT::S(D)
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