MESON Chess Problem Database

Problem Display
PID: 18485 (7B/2R1pQ2/1n6/1rN1P3/3kN3/1qp3K1/B1P5/8 w - - 0 1)

Barnes, Barry Peter

Comm., Chess, 1956

7B/2R1pQ2/1n6/1rN1P3/3kN3/1qp3K1/B1P5/8

#2

9 + 6

4199 Barnes about Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf2#
    • 1...Qa4
      • 2.Qf2#
    • 1...Qd5
      • 2.Qf2#
    • 1...Qe6
      • 2.Qf2#
    • 1...Qb1
      • 2.Qf2#
    • 1...Qb2
      • 2.Qf2#
    • 1...Qa3
      • 2.Qf2#
    • 1...Qb4
      • 2.Qf2#
  • Tries
    • 1.Sxb3+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Rxb3!
    • 1.Se6+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kd5
        • 2.Sxc3#
      • 1...Qxe6!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Sf6#
      • 1...Qg8+
        • 2.Sg5#
      • 1...Kc4
        • 2.Sf6#
      • 1...Kd5
        • 2.Sxc3#
      • 1...Qxc2
        • 2.e6#
      • 1...Qd5
        • 2.Qf2#
      • 1...Sd5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • K(c);S_FLIGHT::QAB1(H)
    • Q(a);::QAB(H)
  • Tries
    • Try
      • S(E);CHECK,XQ(a)
      • Vars
        • K(c);S_FLIGHT::QAR1(H)
        • K(c);P-FLIGHT,XS(D)::QAB1(H)
      • Refutation
        • R(d);XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(H)
        • K(c);P-FLIGHT,XS(D)::QAB1(H)
        • K(c);P-FLIGHT,P_SPINQ(a)::S(D),XP(b)
      • Refutation
        • Q(a);XS(E)
  • Actual
    • Q(H);
    • Threat
      • QAR(H)+S(D)
    • Vars
      • Q(a);CHECK::QAR(H)+S(D)
      • K(c);P-FLIGHT,P_SPINQ(a)::QAR(H)+S(D)
      • K(c);P-FLIGHT,P_SPINQ(a)::S(D),XP(b)
      • Q(a);XP(B)::B(I)+P(F)
      • Q(a);::QAB(H)
      • S(e);SBLOCK,S_CUTQ(a)::S(E)
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