MESON Chess Problem Database

Problem Display
PID: 240244 (K4bQ1/2N1pr2/B7/p2R2nR/rk6/p1p5/P1PP1B2/2N1n1qb w - - 0 1)

Ellerman, Arnoldo

Tijdschrift vd KNSB, 1933

K4bQ1/2N1pr2/B7/p2R2nR/rk6/p1p5/P1PP1B2/2N1n1qb

#2

11 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Bc5#
    • 1...Qf1
      • 2.Bc5#
    • 1...Qg2
      • 2.Bc5#
    • 1...Qg3
      • 2.Bc5#
    • 1...Qg4
      • 2.Bc5#
    • 1...Rf3
      • 2.Rb5#
    • 1...Bxd5+
      • 2.Sxd5#
    • 1...Bh6
      • 2.Qb8#
    • 1...Bg7
      • 2.Qb8#
    • 1...Sxc2
      • 2.Sd3#
    • 1...Sg2
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sef3
      • 2.Sd3#
    • 1...Se4
      • 2.Rd4#
  • Keys
    • 1.Se2!
      • threat
        • 2.dxc3#
      • 1...Bxd5+
        • 2.Sxd5#
      • 1...cxd2
        • 2.c3#
      • 1...Qg3
        • 2.Bc5#
      • 1...Rf3
        • 2.Rb5#
      • 1...Bg7
        • 2.Qb8#
      • 1...Se4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_GUARD::B(E)
    • R(k);N_PINR(F)::R1(F)
    • B(c);CHECK,XR(F)::S(I),XB(c)
    • B(l);OGATE::QAR(K)
    • S(a);N_GUARD,XP(C)::S(A)
    • S(a);N_GUARD,N_PINR(F)::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(i);N_PINR(F)::R(F)
  • Actual
    • S(A);
    • Threat
      • P(D),XP(e)
    • Vars
      • B(c);CHECK,XR(F)::S(I),XB(c)
      • P(e);OGATE,XP(D)::P(C)
      • Q(b);N_GUARD::B(E)
      • R(k);N_PINR(F)::R1(F)
      • B(l);OGATE::QAR(K)
      • S(i);N_PINR(F)::R(F)
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