MESON Chess Problem Database

Problem Display
PID: 175959 (8/3n4/8/1N1b4/p1pQ4/2KP4/kP6/6R1 w - - 0 1)

Rice, John Michael

Busmen's Chess Review, 1962

8/3n4/8/1N1b4/p1pQ4/2KP4/kP6/6R1

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Qxc4#
    • 1...Bg2
      • 2.Qxc4#
    • 1...Bf3
      • 2.Qxc4#
    • 1...Be4
      • 2.Qxc4#
    • 1...Bc6
      • 2.Qxc4#
    • 1...Bb7
      • 2.Qxc4#
    • 1...Ba8
      • 2.Qxc4#
    • 1...cxd3
      • 2.Qxa4#
      • 2.Qxd5#
  • Tries
    • 1.Kc2?
      • threat
        • 2.Sc3#
      • 1...c3
        • 2.Sxc3#
        • 2.Qxa4#
        • 2.Qxd5#
      • 1...cxd3+!
    • 1.Qc5?
      • threat
        • 2.Qa3#
      • 1...a3
        • 2.Qxa3#
      • 1...Sxc5!
    • 1.b3?
      • threat
        • 2.Qf2#
      • 1...axb3
        • 2.Qa7#
      • 1...cxb3
        • 2.Qxa4#
      • 1...cxd3
        • 2.Qxa4#
      • 1...Bf3!
  • Keys
    • 1.b4!
      • threat
        • 2.Qf2#
      • 1...cxd3
        • 2.Qxd5#
      • 1...axb4 ep
        • 2.Qa7#
      • 1...cxb4 ep
        • 2.Qxa4#
      • 1...Bf3
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(d);N_GUARD::QAB(E),XP(c)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • S(F)
      • Refutation
        • P(c);CHECK,XP(D)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • P(b);::QAR1(E),XP(b)
      • Refutation
        • S(e);XQ(E)
    • Try
      • P(B);
      • Threat
        • QAR(E)
      • Vars
        • P(b);OGATEB,XP(B)::QAR(E)
        • P(c);OGATE,XP(B)::QAR2(E),XP(b)
        • P(c);OGATE,XP(D)::QAR2(E),XP(b)
      • Refutation
        • B(d);
  • Actual
    • P(B);
    • Threat
      • QAR(E)
    • Vars
      • P(c);OGATEB,XP(D)::QAB(E),XB(d)
      • P(b);EP,OGATEB,XP(B)::QAR(E)
      • P(c);EP,OGATE,XP(B)::QAR2(E),XP(b)
      • B(d);N_GUARD::QAB(E),XP(c)
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