MESON Chess Problem Database

Problem Display
PID: 108486 (8/8/2R5/1K6/3k1bn1/8/4Q3/3N4 w - - 0 1)

Jerome, Alexandre

Bulletin de la FFE, 1937

8/8/2R5/1K6/3k1bn1/8/4Q3/3N4

#2

4 + 3

3713 Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Rd6#
    • 1...Bd2
      • 2.Rd6#
    • 1...Be5
      • 2.Qc4#
    • 1...Bg5
      • 2.Rd6#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Bh6
      • 2.Rd6#
    • 1...Se5
      • 2.Rd6#
  • Keys
    • 1.Re6!
      • threat
        • 2.Qc4#
        • 2.Qe4#
      • 1...Kd5
        • 2.Qc4#
        • 2.Qe4#
      • 1...Be3
        • 2.Qc4#
      • 1...Be5
        • 2.Qc4#
      • 1...Sf2
        • 2.Qc4#
      • 1...Se3
        • 2.Qd2#
      • 1...Se5
        • 2.Rd6#
      • 1...Sf6
        • 2.Qc4#

This anticipates 18122(1953)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::R(D)
    • B(b);SBLOCK::QAR1(B)
    • B(b);N_GUARD::R(D),XB(b)
    • S(c);S_CUTB(b)::R(D)
  • Actual
    • R(D);
    • Threat
      • DUALS(2)
    • Vars
      • B(b);::QAR1(B)
      • S(c);::QAR1(B)
      • S(c);S_CUTB(b)::QAR2(B)
      • S(c);S_CUTB(b)::R(D)
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