MESON Chess Problem Database

Problem Display
PID: 187612 (8/p7/2Q5/kp6/b7/2P5/1K6/8 w - - 0 1)

Mazel, Eduard

Wiener Schachzeitung, 1909

8/p7/2Q5/kp6/b7/2P5/1K6/8

#2

3 + 4

5454 Near Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...a6
      • 2.Qc7#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qxa7#
      • 1...a6
        • 2.Qc7#
      • 1...Ka6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qxa7#
      • 1...b4
        • 2.cxb4#
      • 1...a6
        • 2.Qc7#

Anticipated by 129820(1903)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAB(C)
  • Tries
    • Try
      • Q(C);P_PINP(c)
      • Threat
        • QAR2(C),XP(d)
      • Vars
        • P(d);SBLOCK::QAB(C)
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XP(d)
    • Vars
      • P(c);OGATE::P(B),XP(c)
      • P(d);SBLOCK::QAB(C)
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