MESON Chess Problem Database

Problem Display
PID: 156456 (8/8/B5p1/N2K2P1/3R2PQ/4kp2/2p2N2/2qb4 w - - 0 1)

Petite, Efren

Best Problems, 2006

8/8/B5p1/N2K2P1/3R2PQ/4kp2/2p2N2/2qb4

#2

8 + 6

5454 Near Snap 2016
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sh1?
      • threat
        • 2.Qf2#
      • 1...f2
        • 2.Qxf2#
      • 1...Qd2!
    • 1.Sh3?
      • threat
        • 2.Qf2#
      • 1...f2
        • 2.Qxf2#
      • 1...Qd2!
    • 1.Rd3+?
      • 1...Kf4
        • 2.Sh3#
      • 1...Ke2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qf2#
      • 1...Kd2
        • 2.Qe1#
      • 1...Ke2
        • 2.Qe1#
        • 2.Qf2#
      • 1...f2
        • 2.Qxf2#
      • 1...Qd2
        • 2.Re4#
      • 1...Be2
        • 2.Sc4#

Anticipated by 18813(1958)

This anticipates 165443(2017)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(D)
      • Vars
        • P(e);::QAB1(D),XP(e)
      • Refutation
        • Q(a);P_PINR(B)
    • Try
      • S(A);
      • Threat
        • QAB1(D)
      • Vars
        • P(e);::QAB1(D),XP(e)
      • Refutation
        • Q(a);P_PINR(B)
    • Try
      • R(B);CHECK
      • Vars
        • K(d);S_FLIGHT::S(A)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAB1(D)
    • Vars
      • K(d);S_FLIGHT::QAB1(D)
      • P(e);::QAB1(D),XP(e)
      • Q(a);SBLOCK::R1(B)
      • B(b);SBLOCK::S(E)
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