MESON Chess Problem Database

Problem Display
PID: 176181 (8/8/2r5/4p3/3kP3/5Q2/3BK3/8 w - - 0 1)

Laue, Hartmut

Schach-Echo, 1963

8/8/2r5/4p3/3kP3/5Q2/3BK3/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qe3#
    • 1...Rc5
      • 2.Qd3#
  • Tries
    • 1.Qc3+?
      • 1...Kxe4
        • 2.Qd3#
      • 1...Rxc3!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qb4#
      • 1...Rc4
        • 2.Qe3#
      • 1...Rc5
        • 2.Qd3#
      • 1...Rd6
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::QAB1(C)
    • R(c);SBLOCK::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAB1(C)
      • Refutation
        • R(c);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAB1(C)
      • K(a);S_FLIGHT::QAB1(C)
      • R(c);SBLOCK::QAB1(C)
      • R(c);SBLOCK::QAR1(C)
      • R(c);N_GUARD::QAR2(C)
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