MESON Chess Problem Database

Problem Display
PID: 44805 (4Bb1B/1p4nK/7R/2kNNR2/6r1/8/3Q4/8 w - - 0 1)

Barnes, Barry Peter

The Problemist Supplement, 2002

4Bb1B/1p4nK/7R/2kNNR2/6r1/8/3Q4/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Rc6#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sd7#
      • 1...Sxf5
        • 2.Sd3#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Se6
        • 2.S5c4#
      • 1...Rg6!
    • 1.Sd3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd4!
    • 1.Sxg4?
      • threat
        • 2.Qc3#
        • 2.Qb4#
      • 1...Kc4
        • 2.Qc3#
      • 1...Sxe8
        • 2.Sde3#
        • 2.Sb6#
        • 2.Qb4#
      • 1...Se6
        • 2.Qb4#
      • 1...Sxf5!
    • 1.Qc1+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Kxd5!
    • 1.Qc3+?
      • 1...Rc4
        • 2.Sd3#
        • 2.Qxc4#
      • 1...Kxd5!
    • 1.Qc2+?
      • 1...Kd4
        • 2.Sf3#
        • 2.Qc4#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Kxd5!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Sed7#
      • 1...Sxf5
        • 2.Sd3#
      • 1...Rg6
        • 2.Sa4#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Se6
        • 2.Sec4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD,SBLOCK::R1(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • R(D)+S(C),DCHECK
      • Vars
        • S(d);XR(D)::S(C)
        • B(e);N_GUARD::QAB1(A),XB(e)
        • S(d);N_GUARD::R(D)+S(C)
      • Refutation
        • R(a);
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P_SPINS(d),S_FLIGHT
    • Try
      • S(C);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • S(d);::QAB1(A)
      • Refutation
        • S(d);XR(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
        • R(a);N_GUARD,P_SPINR(a)::QAR1(A),XR(a)
      • Refutation
        • K(b);P-FLIGHT,XS(B)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT,XS(B)
    • Try
      • Q(A);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAR1(A),XR(a)
      • Refutation
        • K(b);P-FLIGHT,XS(B)
  • Actual
    • S(B);
    • Threat
      • R(D)+S(C),DCHECK
    • Vars
      • S(d);XR(D)::S(C)
      • R(a);N_GUARD::S(B)
      • B(e);N_GUARD::QAB1(A),XB(e)
      • S(d);N_GUARD::R(D)+S(C)
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