MESON Chess Problem Database

Problem Display
PID: 21776 (3B4/8/1RqkP3/3p3Q/N7/2pPP3/2K5/8 w - - 0 1)

Ellerman, Arnoldo

Good Companions, 1921

3B4/8/1RqkP3/3p3Q/N7/2pPP3/2K5/8

#2

8 + 4

5501 Chess Cameos 1936

SOLUTION

  • SOUND
  • Tries
    • 1.e4?
      • threat
        • 2.Qxd5#
      • 1...Kxe6
        • 2.Qxd5#
      • 1...d4
        • 2.Qd5#
      • 1...dxe4!
  • Keys
    • 1.Sxc3!
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Se4#
      • 1...Kxe6
        • 2.Qxd5#
      • 1...d4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);
      • Threat
        • QAR1(E),XP(b)
      • Vars
        • K(d);P-FLIGHT,XP(G)::QAB1(E),XP(b)
        • P(b);::QAR1(E)
      • Refutation
        • P(b);XP(C)
  • Actual
    • S(D);P_SPINS(D),XP(a)
    • Threat
      • QAR1(E),XP(b)
    • Vars
      • K(d);N_PINS(D),N_SPINQ(c),P_SPINP(b),S_FLIGHT::S(D)
      • K(d);P-FLIGHT,XP(G)::QAB1(E),XP(b)
      • P(b);::QAR1(E)
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