MESON Chess Problem Database

Problem Display
PID: 156419 (4K3/8/4kp1p/2P4r/p3P3/8/2p4b/B1Q5 w - - 0 1)

Pirrone, Santi

Best Problems, 2006

4K3/8/4kp1p/2P4r/p3P3/8/2p4b/B1Q5

#2

5 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qxf6#
      • 1...Re5
        • 2.Qb6#
      • 1...Be5
        • 2.Qa2#
      • 1...f5
        • 2.Qf6#
        • 2.Qa2#
      • 1...Rf5!
    • 1.Qf1?
      • threat
        • 2.Qxf6#
      • 1...Re5
        • 2.Qa6#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Be5
        • 2.Qc4#
      • 1...f5
        • 2.Qc4#
      • 1...Bf4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd7#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(f)
      • Vars
        • R(d);S_CUTB(b)::QAR(B)
        • B(b);S_CUTR(d)::QAB(B)
      • Refutation
        • R(d);
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(f)
      • Vars
        • R(d);S_CUTB(b)::QAR(B)
        • R(d);N_GUARD::QAB1(B),XR(d)
        • B(b);S_CUTR(d)::QAB(B)
        • P(f);S_CUTR(d)::QAB(B)
      • Refutation
        • B(b);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • R(d);N_GUARD::QAB1(B),XR(d)
      • B(b);N_GUARD::QAR1(B),XB(b)
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