MESON Chess Problem Database

Problem Display
PID: 269475 (8/8/8/8/1Rpp4/Q1pk1B2/pP3P2/Rb2K3 w Q - 0 1)

Naef, A

Die Tat, 1955

8/8/8/8/1Rpp4/Q1pk1B2/pP3P2/Rb2K3

#2

7 + 6

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qd1#
      • 1...Bc2
        • 2.Qxc4#
      • 1...cxb3!
    • 1.Qa6?
      • threat
        • 2.Qg6#
      • 1...cxb2
        • 2.Qxc4#
      • 1...Kc2!
  • Keys
    • 1.Qxa2!
      • 1...Kc2
        • 2.Qxb1#
      • 1...Bxa2
        • 2.0-0-0#
      • 1...cxb2
        • 2.Qxc4#
      • 1...Bc2
        • 2.Qxc4#
      • 1...c2
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • B(a);SBLOCK::QAB1(E),XP(e)
      • Refutation
        • P(e);N_SPINP(c),XQ(E)
    • Try
      • Q(E);N_PINP(c),P_PINP(e)
      • Threat
        • QAB(E)
      • Vars
        • P(c);XP(C)::QAB1(E),XP(e)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT
  • Actual
    • Q(E);N_PINP(c),XP(b)
    • Vars
      • K(d);S_CUTP(c),S_FLIGHT::QAB1(E),XB(a)
      • B(a);XQ(E)::0-0-0
      • P(c);XP(C)::QAB1(E),XP(e)
      • B(a);SBLOCK::QAB1(E),XP(e)
      • P(c);::QAB1(E),XP(e)
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