MESON Chess Problem Database

Problem Display
PID: 202876 (7r/6Qp/5p2/5K1k/8/8/8/8 w - - 0 1)

Brunner, Erich Anselm

Magyar Sakkvilag, 1926

7r/6Qp/5p2/5K1k/8/8/8/8

#2

2 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh4
      • 2.Qg4#
    • 1...Ra8
      • 2.Qxh7#
    • 1...Rb8
      • 2.Qxh7#
    • 1...Rc8
      • 2.Qxh7#
    • 1...Rd8
      • 2.Qxh7#
    • 1...Re8
      • 2.Qxh7#
    • 1...Rf8
      • 2.Qxh7#
    • 1...Rg8
      • 2.Qxh7#
    • 1...h6
      • 2.Qg4#
  • Tries
    • 1.Qg1?
      • threat
        • 2.Qh2#
        • 2.Qh1#
      • 1...Kh4
        • 2.Qh2#
        • 2.Qg4#
      • 1...Kh6!
    • 1.Qg2?
      • threat
        • 2.Qh1#
        • 2.Qh3#
        • 2.Qh2#
      • 1...Kh4
        • 2.Qh2#
        • 2.Qg4#
      • 1...Kh6!
    • 1.Qg6+?
      • 1...Kh4
        • 2.Qg4#
      • 1...hxg6+!
    • 1.Qc7?
      • threat
        • 2.Qh2#
      • 1...Kh4
        • 2.Qh2#
      • 1...Kh6!
  • Keys
    • 1.Kf4!
      • 1...Kh4
        • 2.Qh6#
        • 2.Qg4#
      • 1...Ra8
        • 2.Qxh7#
      • 1...Rb8
        • 2.Qxh7#
      • 1...Rc8
        • 2.Qxh7#
      • 1...Rd8
        • 2.Qxh7#
      • 1...Re8
        • 2.Qxh7#
      • 1...Rf8
        • 2.Qxh7#
      • 1...Rg8
        • 2.Qxh7#
      • 1...f5
        • 2.Qg5#
      • 1...h6
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR1(B)
    • R(d);N_GUARD::QAR2(B),XP(c)
    • P(c);SBLOCK::QAB1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • P(c);CHECK,XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • R(d);N_GUARD::QAR2(B),XP(c)
      • P(b);N_GUARD::QAR1(B)
      • P(c);SBLOCK::QAB1(B)
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