MESON Chess Problem Database

Problem Display
PID: 241883 (8/2p5/1pQ5/8/1k6/1N6/1K6/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1931

8/2p5/1pQ5/8/1k6/1N6/1K6/8

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qe4#
  • Tries
    • 1.Qc3+?
      • 1...Ka4
        • 2.Qc4#
      • 1...Kb5!
    • 1.Qc5+?
      • 1...Ka4
        • 2.Qc4#
      • 1...bxc5!
    • 1.Qxc7?
      • 1...Ka4
        • 2.Qc4#
      • 1...b5
        • 2.Qf4#
      • 1...Kb5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...b5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAR(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);XQ(C)
    • Try
      • Q(C);XP(c)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(b);SBLOCK::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • P(b);::QAR1(C),XP(b)
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