MESON Chess Problem Database

Problem Display
PID: 214574 (4R3/3p4/1Q1Br3/8/3p4/2pBkp2/5p2/K2R4 w - - 0 1)

Lenau, John W

Newark Sunday Call, 1877

4R3/3p4/1Q1Br3/8/3p4/2pBkp2/5p2/K2R4

#2

6 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Rxe4#
    • 1...Re7
      • 2.Rxe7#
  • Keys
    • 1.Be5!
      • threat
        • 2.Qxd4#
      • 1...Rxe5
        • 2.Qh6#
      • 1...Rxb6
        • 2.Bd6#
      • 1...Rd6
        • 2.Bxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(f);OGATE::R1(F),XR(f)
    • R(f);OGATEB::R(F),XR(f)
  • Actual
    • B(E);N_PINR(f)
    • Threat
      • QAB1(D),XP(e)
    • Vars
      • R(f);OGATE,P_SPINR(f),XB(E)::QAB(D)
      • R(f);N_SPINP(e),OGATEB,XQ(D)::R(F)+B(E)
      • R(f);OGATEB::R(F)+B(E),XR(f)
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