MESON Chess Problem Database

Problem Display
PID: 171072 (6Q1/8/8/8/3ppp2/4k3/7P/4K3 w - - 0 1)

Ender, Adolf

Rhein-Neckar-Zeitung, 1996

6Q1/8/8/8/3ppp2/4k3/7P/4K3

#2

3 + 4

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qb3#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qe2#
      • 1...f3
        • 2.Qd2#
      • 1...d3
        • 2.Qf2#
      • 1...Kd3!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qe2#
      • 1...Kd3
        • 2.Qb3#
      • 1...Kf3
        • 2.Qe2#
      • 1...d3
        • 2.Qf2#
      • 1...f3
        • 2.Qd2#

This anticipates 172464(1999), 47428(2002)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(d);SBLOCK::QAB1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • K(a);P-FLIGHT::QAB1(C)
      • P(b);SBLOCK::QAB1(C)
      • P(d);SBLOCK::QAB1(C)
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