MESON Chess Problem Database

Problem Display
PID: 166855 (NBk1r3/8/K2Q4/b7/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2001

NBk1r3/8/K2Q4/b7/8/8/8/8

#2

4 + 3

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Sb6#
      • 2.Qc7#
    • 1...Bd2
      • 2.Sb6#
      • 2.Qc7#
    • 1...Bc3
      • 2.Sb6#
      • 2.Qc7#
    • 1...Bb4
      • 2.Sb6#
      • 2.Qc7#
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bc7
      • 2.Qxc7#
  • Tries
    • 1.Qc6+?
      • 1...Kxb8
        • 2.Qb7#
      • 1...Bc7
        • 2.Qxc7#
      • 1...Kd8!
    • 1.Qd7+?
      • 1...Kxb8
        • 2.Qb7#
      • 1...Kxd7!
  • Keys
    • 1.Bc7!
      • 1...Bxc7
        • 2.Qxc7#
      • 1...Re1
        • 2.Qd8#
      • 1...Re2
        • 2.Qd8#
      • 1...Re3
        • 2.Qd8#
      • 1...Re4
        • 2.Qd8#
      • 1...Re5
        • 2.Qd8#
      • 1...Re6
        • 2.Qxe6#
      • 1...Re7
        • 2.Qd8#
      • 1...Rd8
        • 2.Qxd8#
      • 1...Rf8
        • 2.Qe6#
      • 1...Rg8
        • 2.Qe6#
      • 1...Rh8
        • 2.Qe6#
      • 1...Be1
        • 2.Sb6#
      • 1...Bd2
        • 2.Sb6#
      • 1...Bc3
        • 2.Sb6#
      • 1...Bb4
        • 2.Sb6#
      • 1...Bb6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(C),XB(a)
    • B(a);N_GUARD::QAR1(B),XB(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XB(D)::QAR1(B)
        • B(a);N_GUARD,P_SPINB(a)::QAR1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XB(D)::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • B(D);
    • Vars
      • B(a);OGATE,XB(D)::QAR1(B),XB(a)
      • R(c);N_GUARD::QAR1(B)
      • R(c);N_GUARD,P_PINQ(B)::QAB(B),XR(c)
      • R(c);N_GUARD::QAR1(B),XR(c)
      • R(c);N_GUARD::QAB(B)
      • B(a);N_GUARD::S(C)
      • B(a);N_GUARD::S(C),XB(a)
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