MESON Chess Problem Database

Problem Display
PID: 201353 (6N1/8/2P2B2/2PkP3/P2P4/K6P/N3PPR1/3R1Q1B w - - 0 1)

Churchill, HV

Prize, Pittsburgh Post, 1922

6N1/8/2P2B2/2PkP3/P2P4/K6P/N3PPR1/3R1Q1B

#2

16 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.e4#
    • 1...Kxc6
      • 2.Rg7#
  • Tries
    • 1.Se7+?
      • 1...Kc4
        • 2.e3#
        • 2.e4#
      • 1...Ke4
        • 2.Rg4#
      • 1...Ke6!
    • 1.Rg1+?
      • 1...Kc4
        • 2.e3#
        • 2.e4#
      • 1...Ke6!
    • 1.Rh2+?
      • 1...Kc4
        • 2.e3#
        • 2.e4#
      • 1...Ke6!
    • 1.Rg3+?
      • 1...Kc4
        • 2.Rc3#
        • 2.e3#
        • 2.e4#
      • 1...Ke6!
    • 1.Rg4+?
      • 1...Kc4
        • 2.Rc1#
        • 2.e3#
        • 2.e4#
      • 1...Ke6!
    • 1.Rg5+?
      • 1...Kc4
        • 2.e3#
        • 2.e4#
      • 1...Ke6!
    • 1.Rg6+?
      • 1...Kc4
        • 2.e3#
        • 2.e4#
      • 1...Ke6!
    • 1.Rg7+?
      • 1...Kc4
        • 2.e3#
        • 2.e4#
      • 1...Ke6!
    • 1.e3?
      • 1...Ke4
        • 2.Rg5#
      • 1...Kxc6
        • 2.Rg7#
      • 1...Ke6!
  • Keys
    • 1.Sh6!
      • 1...Kc4
        • 2.e4#
      • 1...Ke4
        • 2.Rg4#
      • 1...Kxc6
        • 2.Rg7#
      • 1...Ke6
        • 2.d5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(B)+P(E)
    • K(a);S_FLIGHT,XP(N)::B(C)+R(G)
  • Tries
    • Try
      • S(P);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)+R(G),DCHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT::B(C)+R(G)
        • K(a);S_FLIGHT,XP(N)::B(C)+R(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(P);
    • Vars
      • K(a);S_FLIGHT::QAB(B)+P(E)
      • K(a);S_FLIGHT::B(C)+R(G),DCHECK
      • K(a);S_FLIGHT,XP(N)::B(C)+R(G)
      • K(a);OGATE,S_FLIGHT::P(K)
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