MESON Chess Problem Database

Problem Display
PID: 276701 (5Qb1/2p3K1/4pP2/2ppk3/3RP1p1/b3B1P1/3N4/8 w - - 0 1)

Velasco, Jose Luis

Best Problems, 2024

5Qb1/2p3K1/4pP2/2ppk3/3RP1p1/b3B1P1/3N4/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...cxd4
      • 2.Bf4#
    • 1...c6
      • 2.Qb8#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Rxd5#
        • 2.Qxc7#
      • 1...cxd4
        • 2.Bf4#
      • 1...c4
        • 2.Rxd5#
      • 1...c6
        • 2.Qc7#
      • 1...dxe4!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Rxd5#
      • 1...Kd6
        • 2.Sc4#
      • 1...cxd4
        • 2.Bf4#
      • 1...dxe4
        • 2.Qh5#
      • 1...c6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK,XR(D)::B(B)
    • P(g);OGATEB::QAB(H)
  • Tries
    • Try
      • Q(H);P_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);SBLOCK,XR(D)::B(B)
        • P(c);::R1(D),XP(d)
        • P(g);::QAB(H)
      • Refutation
        • P(d);XP(E)
  • Actual
    • Q(H);P_PINP(f)
    • Threat
      • R1(D),XP(d)
    • Vars
      • K(e);N_SPINP(f),P_SPINP(d),S_FLIGHT::S(A)
      • P(c);SBLOCK,XR(D)::B(B)
      • P(d);XP(E)::QAR(H)
      • P(g);OGATEB::QAB(H)
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