MESON Chess Problem Database

Problem Display
PID: 108205 (8/8/8/8/8/p5pK/1pR4b/RB4kN w - - 0 1)

Bie, Hans Petter

Norsk Sjakkblad, 1998

8/8/8/8/8/p5pK/1pR4b/RB4kN

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...bxa1Q
      • 2.Rc1#
    • 1...bxa1S
      • 2.Rc1#
    • 1...bxa1B
      • 2.Rc1#
    • 1...bxa1R
      • 2.Rc1#
  • Tries
    • 1.Rxb2?
      • threat
        • 2.Ba2#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...Kf1
        • 2.Ba2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...Kxh1
        • 2.Be4#
      • 1...a2
        • 2.Bxa2#
        • 2.Bc2#
        • 2.Bd3#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...axb2!
    • 1.Re2?
      • threat
        • 2.Re1#
      • 1...Kxh1
        • 2.Be4#
      • 1...Kf1!
    • 1.Rg2+?
      • 1...Kf1
        • 2.Bd3#
      • 1...Kxh1!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Rd1#
      • 1...Kf1
        • 2.Bd3#
      • 1...Kxh1
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • P(b);N_GUARD,XR(A)::R(D)
  • Tries
    • Try
      • R(D);XP(b)
      • Threat
        • DUALS(7)
      • Vars
        • K(a);P-FLIGHT,XS(C)::R(A)+B(B),DCHECK
      • Refutation
        • P(d);XR(D)
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • K(a);P-FLIGHT,XS(C)::R(A)+B(B),DCHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(a);P-FLIGHT::R(A)+B(B),DCHECK
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • R(D);
    • Threat
      • R(D)
    • Vars
      • K(a);P-FLIGHT::R(A)+B(B),DCHECK
      • K(a);P-FLIGHT,XS(C)::R(A)+B(B),DCHECK
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