MESON Chess Problem Database

Problem Display
PID: 229178 (1K4Bn/pppR3n/q4k2/rr2bp1P/3Q1p2/5N2/8/B2R4 w - - 0 1)

Jordan, Gijsbertus

Brisbane Courier, 1926

1K4Bn/pppR3n/q4k2/rr2bp1P/3Q1p2/5N2/8/B2R4

#2

8 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c5+
      • 2.Qxe5#
    • 1...c6+
      • 2.Qd6#
  • Tries
    • 1.Rf7+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Sxf7!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qg7#
      • 1...c5+
        • 2.Bxe5#
      • 1...c6+
        • 2.R1d6#
      • 1...Sf7
        • 2.Qg6#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sg6
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(j);CHECK,S_CUTR(c)::QAB1(D),XB(d)
    • P(j);CHECK,N_GUARD,S_CUTQ(f)::QAR2(D)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(g);N_SPINB(d),P-FLIGHT::QAB1(D)
      • Refutation
        • S(l);XR(F)
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • P(j);CHECK,S_CUTR(c)::B(A),XB(d)
      • P(j);CHECK,N_GUARD,S_CUTQ(f)::R(B)
      • S(l);N_GUARD::QAR1(D)
      • S(k);N_GUARD::QAB1(D),XS(k)
      • S(l);N_GUARD::QAR1(D),XS(l)
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