MESON Chess Problem Database

Problem Display
PID: 218589 (8/8/3p4/3K2N1/8/3P3p/1Q3N1k/4B2B w - - 0 1)

Nix, John Gilbert

Newark Sunday Call, 1881

8/8/3p4/3K2N1/8/3P3p/1Q3N1k/4B2B

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4+?
      • 1...Kxh1
        • 2.Qh2#
      • 1...Kg1!
    • 1.Bf3?
      • threat
        • 2.Sfxh3#
      • 1...Kg3
        • 2.Sfxh3#
      • 1...Kg1!
    • 1.Qd4?
      • 1...Kg3
        • 2.Sg4#
      • 1...Kg1!
    • 1.Qb4?
      • 1...Kg3
        • 2.Sg4#
      • 1...Kg1!
  • Keys
    • 1.Qe2!
      • 1...Kg1
        • 2.Sf3#
      • 1...Kg3
        • 2.Sfxh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(B)::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Threat
        • QAR(C)+S(D),XP(b)
      • Vars
        • K(a);S_FLIGHT::B(A)+S(D),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::B(A)+S(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::B(A)+S(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::S(G)
      • K(a);S_FLIGHT::B(A)+S(D),XP(b)
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