MESON Chess Problem Database

Problem Display
PID: 73231 (3K4/N1p5/b4n2/p1k5/3R4/8/1Q6/B7 w - - 0 1)

Rothwell, Stephen

stern, 1993

3K4/N1p5/b4n2/p1k5/3R4/8/1Q6/B7

#2

5 + 5

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5
      • 2.Qxb5#
    • 1...Bb7
      • 2.Qb5#
    • 1...Bc8
      • 2.Qb5#
    • 1...a4
      • 2.Qb4#
  • Tries
    • 1.Ra4?
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qe5#
      • 1...Kd6
        • 2.Qe5#
      • 1...Sd5!
    • 1.Rd7?
      • threat
        • 2.Qd4#
      • 1...Kc4
        • 2.Qc3#
      • 1...Bc4!
    • 1.Qc1+?
      • 1...Kb6
        • 2.Qxc7#
      • 1...Bc4!
    • 1.Qc3+?
      • 1...Kb6
        • 2.Qxc7#
      • 1...Bc4!
    • 1.Qc2+?
      • 1...Kb6
        • 2.Qxc7#
      • 1...Bc4!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Qd4#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxd6
        • 2.Qe5#
      • 1...Bc4
        • 2.Qa3#
      • 1...Sd5
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::QAR1(B),XB(c)
    • B(c);N_GUARD::QAR1(B)
    • P(a);N_GUARD::QAB1(B)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • B(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B),XP(e)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B),XP(e)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B),XP(e)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • R(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);P-FLIGHT::QAR1(B)
      • K(b);S_FLIGHT,XR(C)::QAB1(B)
      • B(c);SBLOCK::QAB(B)
      • S(d);SBLOCK::R1(C)
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