MESON Chess Problem Database

Problem Display
PID: 176184 (8/4Q2B/8/K6n/8/R7/1k6/3b4 w - - 0 1)

Renn, Albert

Schach-Echo, 1967

8/4Q2B/8/K6n/8/R7/1k6/3b4

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4+?
      • 1...Kc1
        • 2.Ra1#
      • 1...Bb3!
  • Keys
    • 1.Ra1!
      • threat
        • 2.Qa3#
      • 1...Kxa1
        • 2.Qa3#
      • 1...Kb3
        • 2.Qb4#
      • 1...Kc3
        • 2.Qb4#
      • 1...Bb3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::R(A)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • R(A);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);S_FLIGHT,XR(A)::QAR2(C)
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);S_FLIGHT::QAB1(C)
      • B(a);SBLOCK::QAB(C)
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