MESON Chess Problem Database

Problem Display
PID: 198792 (3K2bB/7p/1Q6/8/2nN4/2PrP2R/2PkNp2/R2Bb3 w - - 0 1)

Ellerman, Arnoldo

Il Secolo, 1921

3K2bB/7p/1Q6/8/2nN4/2PrP2R/2PkNp2/R2Bb3

#2

11 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Sf3#
    • 1...Rxe3
      • 2.Sb3#
    • 1...Rxd4+
      • 2.Qxd4#
    • 1...Bd5
      • 2.Sb3#
    • 1...Sd6
      • 2.Sf3#
  • Keys
    • 1.Sg3!
      • threat
        • 2.Se4#
      • 1...Rxd4+
        • 2.Qxd4#
      • 1...Kxc3
        • 2.Se4#
      • 1...Kxe3
        • 2.Qh6#
      • 1...Rxe3
        • 2.Sb3#
      • 1...Bd5
        • 2.Sb3#
      • 1...Sd6
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);N_PINS(H),XP(E)::S(H)
    • R(d);N_PINS(H),XP(F)::S(H)
    • R(d);CHECK,OGATE,XS(H)::QAR2(I),XR(d)
    • B(g);N_PINS(H)::S(H)
    • S(e);N_PINS(H)::S(H)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(d);CHECK,OGATE,XS(H)::QAR2(I),XR(d)
      • K(b);S_FLIGHT,XP(E)::S(D)
      • K(b);OGATEB,S_FLIGHT,XP(F)::QAB(I)
      • R(d);N_PINS(H),XP(F)::S(H)
      • B(g);N_PINS(H)::S(H)
      • S(e);N_PINS(H)::S(H)
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