MESON Chess Problem Database

Problem Display
PID: 202594 (6Q1/4p3/1Pp1n3/3k1p2/2NP1p2/3P3p/2N1P1pB/6K1 w - - 0 1)

Baird, Edith Elina Helen (Mrs WJ)

Helsingin Sanomat, 1923

6Q1/4p3/1Pp1n3/3k1p2/2NP1p2/3P3p/2N1P1pB/6K1

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.S4e3#
    • 1...c5
      • 2.Qa8#
  • Tries
    • 1.Bxf4?
      • threat
        • 2.S4e3#
      • 1...c5
        • 2.Qa8#
      • 1...h2+!
    • 1.Qxg2+?
      • 1...f3
        • 2.S4e3#
        • 2.Qxf3#
      • 1...hxg2!
    • 1.Qb8?
      • threat
        • 2.Qe5#
      • 1...c5
        • 2.Qb7#
        • 2.Qa8#
      • 1...Sc7!
    • 1.Qh8?
      • threat
        • 2.Sb4#
        • 2.Qe5#
      • 1...Sxd4
        • 2.Qe5#
      • 1...Sc5
        • 2.Qe5#
      • 1...Sg5
        • 2.Qe5#
      • 1...Sc7
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#
      • 1...Sf8
        • 2.Qe5#
      • 1...c5
        • 2.Qa8#
      • 1...Sg7!
    • 1.e4+?
      • 1...fxe4 ep
        • 2.S4xe3#
      • 1...fxe4!
    • 1.b7?
      • 1...f3
        • 2.S4e3#
        • 2.Sb6#
      • 1...c5!
  • Keys
    • 1.e3!
      • threat
        • 2.Sb4#
      • 1...fxe3
        • 2.S4xe3#
      • 1...c5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::S(F)
    • P(f);OGATEB::QAB(I)
  • Tries
    • Try
      • B(D);XP(c)
      • Threat
        • S(F)
      • Vars
        • P(f);OGATEB::QAB(I)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(I);CHECK,N_PINS(g),XP(a)
      • Refutation
        • P(b);XQ(I)
    • Try
      • Q(I);N_PINS(g)
      • Threat
        • QAR1(I)
      • Refutation
        • S(g);
    • Try
      • Q(I);N_PINS(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);XP(G)::QAR1(I)
        • S(g);::QAR1(I)
        • P(f);OGATEB::QAB(I)
      • Refutation
        • S(g);
    • Try
      • P(C);CHECK
      • Vars
        • P(c);EP,XP(C)::S(F),XP(c)
      • Refutation
        • P(e);XP(C)
    • Try
      • P(H);
      • Refutation
        • P(f);
  • Actual
    • P(C);
    • Threat
      • S(B)
    • Vars
      • P(c);XP(C)::S(F),XP(c)
      • P(f);OGATEB::QAB(I)
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