MESON Chess Problem Database

Problem Display
PID: 176626 (8/3N4/B3RK2/p2k1P1p/p5bR/1np1P3/1n1P4/8 w - - 0 1)

Ahlheim, Karl-Heinz

Schach-Echo, 1964

8/3N4/B3RK2/p2k1P1p/p5bR/1np1P3/1n1P4/8

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Bb7#
    • 1...Be2
      • 2.Bb7#
    • 1...Bf3
      • 2.Bb7#
    • 1...Bh3
      • 2.Bb7#
    • 1...Bxf5
      • 2.Bb7#
    • 1...Sc4
      • 2.Bb7#
    • 1...Sd4
      • 2.e4#
    • 1...Sc5
      • 2.Sb6#
  • Tries
    • 1.Rxg4?
      • threat
        • 2.Bb7#
      • 1...Sd4
        • 2.Rxd4#
        • 2.e4#
      • 1...Sc5
        • 2.Sb6#
        • 2.Rd4#
      • 1...hxg4!
    • 1.Rd6+?
      • 1...Ke4
        • 2.Bb7#
      • 1...Kxd6!
    • 1.dxc3?
      • threat
        • 2.e4#
      • 1...Bxf5
        • 2.Bb7#
      • 1...Bf3
        • 2.Bb7#
      • 1...Sc5
        • 2.Sb6#
      • 1...Sd2!
    • 1.d3?
      • threat
        • 2.Bb7#
      • 1...Sd4
        • 2.e4#
      • 1...Sc5
        • 2.Sb6#
      • 1...Sxd3!
  • Keys
    • 1.d4!
      • threat
        • 2.Sb6#
      • 1...Sxd4
        • 2.e4#
      • 1...Sc4
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • B(e);::B(E)
    • B(e);XP(D)::B(E)
    • S(a);SBLOCK::B(E)
    • S(b);SBLOCK::P(B)
    • S(b);SBLOCK::S(H)
  • Tries
    • Try
      • R(C);XB(e)
      • Threat
        • B(E)
      • Refutation
        • P(h);XR(C)
    • Try
      • R(F);CHECK
      • Vars
        • K(g);P_SPINB(e),S_FLIGHT::B(E)
      • Refutation
        • K(g);P-FLIGHT,XR(F)
    • Try
      • P(A);XP(c)
      • Threat
        • P(B)
      • Vars
        • B(e);XP(D)::B(E)
        • B(e);::B(E)
        • S(b);SBLOCK::S(H)
      • Refutation
        • S(b);
    • Try
      • P(A);
      • Threat
        • B(E)
      • Vars
        • S(b);SBLOCK::P(B)
        • S(b);SBLOCK::S(H)
      • Refutation
        • S(a);XP(A)
  • Actual
    • P(A);
    • Threat
      • S(H)
    • Vars
      • S(b);SBLOCK,XP(A)::P(B)
      • S(a);SBLOCK::B(E)
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