MESON Chess Problem Database

Problem Display
PID: 46960 (2Q5/3pk3/6P1/2PKP3/8/8/8/8 w - - 0 1)

af Hallstrom, Edvard Johannes Gabriel

Nya Pressen, 1903

2Q5/3pk3/6P1/2PKP3/8/8/8/8

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
3713 Snap 2007
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.cxd6#
  • Tries
    • 1.Kc4?
      • 1...d5+
        • 2.cxd5 ep#
      • 1...d6
        • 2.cxd6#
      • 1...Ke6!
    • 1.Kd4?
      • 1...d5
        • 2.cxd5 ep#
      • 1...d6
        • 2.cxd6#
      • 1...Ke6!
    • 1.Qxd7+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kxd7!
  • Keys
    • 1.Ke4!
      • 1...d5+
        • 2.cxd5 ep#
      • 1...Ke6
        • 2.Qe8#
      • 1...d6
        • 2.cxd6#

This anticipates 19071(1912), 3164(1941), 23708(1964)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::P(A),XP(a)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(a);CHECK,OGATE::P(A),XP(a),EP
        • P(a);OGATE::P(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(a);OGATE::P(A),XP(a),EP
        • P(a);OGATE::P(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • Q(E);CHECK,XP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • P(a);CHECK,OGATE::P(A),XP(a),EP
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(E)
      • P(a);OGATE::P(A),XP(a)
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