MESON Chess Problem Database

Problem Display
PID: 207575 (3r4/5PbQ/4p1K1/5NPp/1RB1kB2/2R3P1/1P6/1bNq1n2 w - - 0 1)

Ellerman, Arnoldo

Il Problema, 1931

3r4/5PbQ/4p1K1/5NPp/1RB1kB2/2R3P1/1P6/1bNq1n2

#2

12 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Re3#
    • 1...Sh2
      • 2.Re3#
    • 1...Se3
      • 2.Rxe3#
  • Tries
    • 1.Bd3+?
      • 1...Kd5
        • 2.Se7#
        • 2.Rb5#
      • 1...Kf3!
  • Keys
    • 1.Se7!
      • threat
        • 2.Bd5#
      • 1...Kd4+
        • 2.Bd3#
      • 1...Qd4
        • 2.Kxh5#
      • 1...Qd5
        • 2.Bxd5#
      • 1...Rd4
        • 2.Kxg7#
      • 1...Rd5
        • 2.Bxd5#
      • 1...Bd4
        • 2.Kh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::R1(C)
    • S(c);N_GUARD::R1(C),XS(c)
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(H);
    • Threat
      • R(E)+B(F),DCHECK
    • Vars
      • K(d);CHECK,P-FLIGHT::R(E)+B(F)
      • Q(b);SBLOCK::QAB(L)+K(J),XP(e)
      • Q(b);::R(E)+B(F),DCHECK,XQ(b)
      • R(h);SBLOCK::QAB(L)+K(J),XB(g)
      • R(h);::R(E)+B(F),DCHECK,XR(h)
      • B(g);SBLOCK::QAB(L)+K(J)
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