MESON Chess Problem Database

Problem Display
PID: 8084 (2k5/KR1nQ2q/6b1/8/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Die Schwalbe, 1995

2k5/KR1nQ2q/6b1/8/8/8/8/8

#2

3 + 4

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qg8
      • 2.Qxd7#
    • 1...Qh1
      • 2.Qxd7#
    • 1...Qh2
      • 2.Qxd7#
    • 1...Qh4
      • 2.Qxd7#
    • 1...Qh5
      • 2.Qxd7#
    • 1...Qh6
      • 2.Qxd7#
    • 1...Qh8
      • 2.Qxd7#
    • 1...Bb1
      • 2.Qe8#
    • 1...Bc2
      • 2.Qe8#
    • 1...Bd3
      • 2.Qe8#
    • 1...Be4
      • 2.Qe8#
    • 1...Bf5
      • 2.Qe8#
    • 1...Bf7
      • 2.Qxd7#
    • 1...Be8
      • 2.Qxe8#
    • 1...Sc5
      • 2.Rc7#
      • 2.Rb8#
    • 1...Se5
      • 2.Rc7#
      • 2.Rb8#
    • 1...Sb6
      • 2.Rc7#
      • 2.Rb8#
    • 1...Sf6
      • 2.Rc7#
      • 2.Rb8#
    • 1...Sb8
      • 2.Rc7#
      • 2.Rxb8#
    • 1...Sf8
      • 2.Rc7#
      • 2.Rb8#
  • Tries
    • 1.Rxd7?
      • threat
        • 2.Rc7#
        • 2.Rd8#
        • 2.Qd8#
      • 1...Qg8
        • 2.Rc7#
      • 1...Qh2
        • 2.Rd8#
        • 2.Qd8#
      • 1...Qh4
        • 2.Rc7#
        • 2.Rd8#
      • 1...Qh8
        • 2.Rc7#
      • 1...Qxe7!
    • 1.Qf8+?
      • 1...Be8
        • 2.Qxe8#
      • 1...Sxf8!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qc7#
      • 1...Kd8
        • 2.Rb8#
      • 1...Qh2
        • 2.Qxd7#
      • 1...Sc5
        • 2.Qb8#
      • 1...Se5
        • 2.Qb8#
      • 1...Sb6
        • 2.Qb8#
      • 1...Sf6
        • 2.Qb8#
      • 1...Sb8
        • 2.Qxb8#
      • 1...Sf8
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 13
  • Sets
    • Q(c);N_GUARD::QAB1(C),XS(b)
    • B(a);N_GUARD::QAR2(C)
    • B(a);S_CUTQ(c)::QAB1(C),XS(b)
    • B(a);N_GUARD::QAR2(C),XB(a)
  • Tries
    • Try
      • R(B);XS(b)
      • Threat
        • DUALS(3)
      • Vars
        • Q(c);::R1(B)
      • Refutation
        • Q(c);P_PINR(B),XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(C),XB(a)
      • Refutation
        • S(b);P_PINR(B),XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(b)::R(B)
      • Q(c);N_GUARD::QAB1(C),XS(b)
      • S(b);N_GUARD,P_PINR(B)::QAR1(C)
      • S(b);N_GUARD,P_PINR(B)::QAR1(C),XS(b)
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