MESON Chess Problem Database

Problem Display
PID: 42405 (3R4/5K1B/p7/1p2k3/1Bp5/1Nn5/5R2/q7 w - - 0 1)

Barnes, Barry Peter

McDowell, Michael

Comm., The Problemist, 1991

3R4/5K1B/p7/1p2k3/1Bp5/1Nn5/5R2/q7

#2

6 + 6

3310 2345 Chess Problems 1997
4199 Barnes about Chess Problems 2001
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Bxc3#
    • 1...Qf1
      • 2.Bxc3#
    • 1...Qg1
      • 2.Bxc3#
    • 1...Qh1
      • 2.Bxc3#
    • 1...Qa2
      • 2.Bxc3#
    • 1...Qa3
      • 2.Bxc3#
    • 1...Qa4
      • 2.Bxc3#
    • 1...Se4
      • 2.Rf5#
    • 1...Sd5
      • 2.Bd6#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Rf5#
      • 1...Qb1
        • 2.Bxc3#
      • 1...Qf1
        • 2.Bxc3#
      • 1...Sd5!
    • 1.Sa5?
      • threat
        • 2.Sc6#
      • 1...Qh1
        • 2.Bxc3#
      • 1...Qxa5!
    • 1.Sc5?
      • threat
        • 2.Rf5#
      • 1...Qb1
        • 2.Bxc3#
      • 1...Qf1
        • 2.Bxc3#
      • 1...Sd5!
    • 1.Bf8?
      • threat
        • 2.Bg7#
      • 1...Se4
        • 2.Rf5#
      • 1...Sd5
        • 2.Bd6#
      • 1...Qg1!
    • 1.Bc2?
      • threat
        • 2.Rf5#
      • 1...Qf1
        • 2.Bxc3#
      • 1...Se4!
    • 1.Rdd2?
      • threat
        • 2.Bd6#
      • 1...Qa3
        • 2.Bxc3#
      • 1...Se4
        • 2.Rf5#
      • 1...Sd5!
    • 1.Rd4?
      • threat
        • 2.Bd6#
        • 2.Rf5#
      • 1...Qb1
        • 2.Bd6#
      • 1...Qf1
        • 2.Bd6#
      • 1...Qa3
        • 2.Rf5#
      • 1...Se4
        • 2.Rf5#
      • 1...Sd5
        • 2.Rf5#
        • 2.Re4#
      • 1...cxb3!
  • Keys
    • 1.Be7!
      • threat
        • 2.Bf6#
      • 1...Se4
        • 2.Rf5#
      • 1...Sd5
        • 2.Bd6#

Anticipated by 11783(1972)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::B(C),XS(b)
    • Q(a);N_GUARD,P_PINR(A)::B(C),XS(b)
    • S(b);SBLOCK::R1(A)
    • S(b);SBLOCK::B(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(A)
      • Vars
        • Q(a);N_GUARD::B(C),XS(b)
        • Q(a);N_GUARD,P_PINR(A)::B(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • Q(a);N_GUARD::B(C),XS(b)
      • Refutation
        • Q(a);XS(B)
    • Try
      • S(B);
      • Threat
        • R1(A)
      • Vars
        • Q(a);N_GUARD::B(C),XS(b)
        • Q(a);N_GUARD,P_PINR(A)::B(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • S(b);SBLOCK::R1(A)
        • S(b);SBLOCK::B(C)
      • Refutation
        • Q(a);
    • Try
      • B(E);
      • Threat
        • R1(A)
      • Vars
        • Q(a);N_GUARD,P_PINR(A)::B(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • R(F);
      • Threat
        • B(C)
      • Vars
        • Q(a);N_GUARD::B(C),XS(b)
        • S(b);SBLOCK::R1(A)
      • Refutation
        • S(b);
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::B(C)
        • Q(a);P_PINR(A)::B(C)
        • Q(a);::R1(A)
        • S(b);::R1(A)
      • Refutation
        • P(c);XS(B)
  • Actual
    • B(C);
    • Threat
      • B(C)
    • Vars
      • S(b);SBLOCK::R1(A)
      • S(b);SBLOCK::B(C)
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