MESON Chess Problem Database

Problem Display
PID: 233326 (2K5/8/2Rp2P1/P1pk1p2/P1Rp1p2/3p1N2/N2P4/3B3Q w - - 0 1)

Neyndorff, Luke

Chess Life, 1988

2K5/8/2Rp2P1/P1pk1p2/P1Rp1p2/3p1N2/N2P4/3B3Q

#2

11 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc3#
    • 1...Kxc6
      • 2.Sb4#
      • 2.Sxd4#
      • 2.Se5#
  • Tries
    • 1.Kd7?
      • 1...Ke4
        • 2.Sc3#
      • 1...Kxc4!
    • 1.Bb3?
      • 1...Ke4
        • 2.Sc3#
      • 1...Kxc6
        • 2.Sb4#
        • 2.Sxd4#
        • 2.Se5#
      • 1...Ke6!
    • 1.Rb6?
      • 1...Kxc4
        • 2.Bb3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6!
    • 1.Rxd6+?
      • 1...Kxc4
        • 2.Se5#
      • 1...Ke4
        • 2.Sc3#
        • 2.Qe1#
      • 1...Kxd6!
    • 1.Qe1?
      • 1...Kxc6
        • 2.Sb4#
      • 1...Kxc4!
    • 1.Qg1?
      • 1...Kxc4
        • 2.Qxd4#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kxc6
        • 2.Sb4#
      • 1...Ke6!
    • 1.Qh7?
      • 1...Ke4
        • 2.Sc3#
      • 1...Kxc6
        • 2.Sb4#
        • 2.Qb7#
      • 1...Ke6
        • 2.Qf7#
      • 1...Kxc4!
  • Keys
    • 1.Qh8!
      • 1...Kxc4
        • 2.Qxd4#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kxc6
        • 2.Sb4#
      • 1...Ke6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(b),S_FLIGHT::S(C)
  • Tries
    • Try
      • K(K);S_FLIGHT
      • Vars
        • K(e);P_SPINP(b),S_FLIGHT::S(C)
      • Refutation
        • K(e);P_SPINP(d),S_FLIGHT,XR(G)
    • Try
      • B(A);
      • Vars
        • K(e);P_SPINP(b),S_FLIGHT::S(C)
      • Refutation
        • K(e);P_SPINP(g),S_FLIGHT
    • Try
      • R(I);
      • Vars
        • K(e);OGATEB,S_FLIGHT,XR(G)::B(A)
        • K(e);P_SPINP(b),S_FLIGHT::S(C)
      • Refutation
        • K(e);P_SPINP(g),S_FLIGHT
    • Try
      • R(I);CHECK,XP(g)
      • Vars
        • K(e);S_FLIGHT,XR(G)::S(E)
      • Refutation
        • K(e);P-FLIGHT,XR(I)
    • Try
      • Q(B);
      • Vars
        • K(e);P_SPINP(d),S_FLIGHT,XR(I)::S(C)
      • Refutation
        • K(e);P_SPINP(d),S_FLIGHT,XR(G)
    • Try
      • Q(B);
      • Vars
        • K(e);P_SPINP(d),S_FLIGHT,XR(G)::QAR1(B),XP(b)
        • K(e);P_SPINP(b),S_FLIGHT::S(C)
        • K(e);P_SPINP(d),S_FLIGHT,XR(I)::S(C)
      • Refutation
        • K(e);P_SPINP(g),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(e);P_SPINP(b),S_FLIGHT::S(C)
        • K(e);P_SPINP(g),S_FLIGHT::QAB1(B)
      • Refutation
        • K(e);P_SPINP(d),S_FLIGHT,XR(G)
  • Actual
    • Q(B);
    • Vars
      • K(e);P_SPINP(d),S_FLIGHT,XR(G)::QAR1(B),XP(b)
      • K(e);P_SPINP(b),S_FLIGHT::S(C)
      • K(e);P_SPINP(d),S_FLIGHT,XR(I)::S(C)
      • K(e);P_SPINP(g),S_FLIGHT::QAR1(B)
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