MESON Chess Problem Database

Problem Display
PID: 182334 (K4nN1/8/2pk2p1/B2p1pN1/3Q4/8/8/8 w - - 0 1)

White, Alain Campbell

San Francisco Chronicle, 1906

K4nN1/8/2pk2p1/B2p1pN1/3Q4/8/8/8

#2

5 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qf4+?
      • 1...Kc5
        • 2.Qb4#
      • 1...Kd7!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qe7#
      • 1...Ke5
        • 2.Bc7#
      • 1...d4
        • 2.Qxd4#
      • 1...c5
        • 2.Qc7#
      • 1...Se6
        • 2.Sf7#
      • 1...Sd7
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAB1(A)
    • Vars
      • K(d);S_FLIGHT::B(B)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(c);::QAB1(A)
      • S(f);SBLOCK::S(C)
      • S(f);SBLOCK::B(B)
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