MESON Chess Problem Database

Problem Display
PID: 21670 (2N5/1nR1p3/p4kBK/r5p1/p1bN4/2B1R3/q4b2/8 w - - 0 1)

Fink, Adolf Jay

3rd HM., Good Companions (February), 1920

2N5/1nR1p3/p4kBK/r5p1/p1bN4/2B1R3/q4b2/8

#2

7 + 10

3132 The Good Companion Two-Mover 1922
5064 100 Years of the American Two-move Chess Problem 1962

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Re6#
    • 1...Bb5
      • 2.Se6#
    • 1...Bd5
      • 2.Se6#
    • 1...Be6
      • 2.Sb5#
    • 1...Sc5
      • 2.Se6#
    • 1...e5
      • 2.Rf3#
    • 1...e6
      • 2.Rf7#
  • Tries
    • 1.Rf3+?
      • 1...Rf5
        • 2.Rxf5#
      • 1...Ke5!
    • 1.Rc6+?
      • 1...Be6
        • 2.Sb5#
      • 1...e6
        • 2.Sb5#
      • 1...Sd6!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Sd7#
      • 1...Rd5
        • 2.Re6#
      • 1...Bb5
        • 2.Se6#
      • 1...Be6
        • 2.Sb5#
      • 1...Sc5
        • 2.Se6#
      • 1...e5
        • 2.Rf3#
      • 1...e6
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(e);S_CUTB(d)::R1(B)
    • B(d);S_CUTR(e)::B(A)+S(C)
    • B(d);S_CUTP(j)::B(A)+S(C)
    • S(i);S_CUTR(e)::B(A)+S(C)
    • P(j);SBLOCK,S_CUTR(e)::R(B)
    • P(j);OGATE::R1(F)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::R1(B),XR(e)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • B(d);P_SPINB(d)::B(A)+S(C)
        • P(j);P_SPINP(j)::B(A)+S(C)
      • Refutation
        • S(i);P_SPINS(i)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • R(e);S_CUTB(d)::R1(B)
      • B(d);S_CUTR(e)::B(A)+S(C)
      • B(d);S_CUTP(j)::B(A)+S(C)
      • S(i);S_CUTR(e)::B(A)+S(C)
      • P(j);SBLOCK,S_CUTR(e)::R(B)
      • P(j);OGATE::R1(F)
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