MESON Chess Problem Database

Problem Display
PID: 234905 (N1brrb2/1ppk1Pp1/1P4Rp/5K2/4R2p/B3p2Q/6n1/8 w - - 0 1)

Haring, Jacobus

Buletin Problemistic, 1971

N1brrb2/1ppk1Pp1/1P4Rp/5K2/4R2p/B3p2Q/6n1/8

#2

8 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4
      • 2.Kxe4#
    • 1...Re5+
      • 2.Kxe5#
    • 1...Re7
      • 2.Rd4#
    • 1...Be7
      • 2.Ke5#
  • Tries
    • 1.Re7+?
      • 1...Bxe7
        • 2.Ke4#
        • 2.Ke5#
      • 1...Rxe7!
  • Keys
    • 1.Be7!
      • 1...Rxe7
        • 2.Rd4#
      • 1...Bxe7
        • 2.Ke5#
      • 1...cxb6
        • 2.Rd6#
      • 1...Se1
        • 2.Kf4#
      • 1...Sf4
        • 2.Kxf4#
      • 1...e2
        • 2.Qd3#
      • 1...h5
        • 2.Kg5#
      • 1...c5
        • 2.Rd6#
      • 1...c6
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • R(k);XR(C)::QAB(B)+K(D),XR(k)
    • R(k);CHECK::QAB(B)+K(D),XR(k)
    • R(k);S_CUTB(l)::R(C)
    • B(l);::QAB(B)+K(D)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • R(k);XR(C)
  • Actual
    • B(A);
    • Vars
      • R(k);SBLOCK,XB(A)::R(C)
      • B(l);SBLOCK,XB(A)::QAB(B)+K(D)
      • P(f);N_GUARD,XP(E)::R1(F)
      • S(a);::QAB(B)+K(D)
      • S(a);::QAB(B)+K(D),XS(a)
      • P(b);OGATE::QAR(B)
      • P(d);::QAB(B)+K(D)
      • P(f);N_GUARD::R1(F)
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Developed and maintained by Brian Stephenson.
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