MESON Chess Problem Database

Problem Display
PID: 55463 (Rn6/1k6/2R1P3/8/8/3Q4/8/1K6 w - - 0 1)

Mazel, Eduard

Source?, 0000

Rn6/1k6/2R1P3/8/8/3Q4/8/1K6

#2

5 + 2

3757 Schachminiaturen I 1902
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Qxa6#
    • 1...Sd7
      • 2.Qa6#
  • Keys
    • 1.Rc8!
      • 1...Kb6
        • 2.Qb3#
      • 1...Kxa8
        • 2.Qa6#
      • 1...Kxc8
        • 2.Qd7#
      • 1...Sa6
        • 2.Qb5#
        • 2.Qxa6#
      • 1...Sc6
        • 2.Qb5#
        • 2.Qa6#
      • 1...Sd7
        • 2.Qa6#

This anticipates 30528(1899), 172366(1997)

There are these versions: 174929

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::QAB1(B),XS(b)
    • S(b);N_GUARD::QAB1(B)
  • Actual
    • R(C);
    • Vars
      • K(a);P-FLIGHT::QAR(B)
      • K(a);P_SPINS(b),S_FLIGHT,XR(E)::QAR2(B)
      • K(a);P_SPINS(b),S_FLIGHT,XR(C)::QAB1(B)
      • S(b);N_GUARD::QAB1(B)
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