MESON Chess Problem Database

Problem Display
PID: 201956 (8/2p1RK1B/8/3nNP2/1Qppk3/r2pPpn1/5P2/8 w - - 0 1)

Robert, Philippe

Harmonie Aktiv, 2016

8/2p1RK1B/8/3nNP2/1Qppk3/r2pPpn1/5P2/8

#2

8 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.f6#
    • 1...Sh1
      • 2.f6#
    • 1...Se2
      • 2.f6#
    • 1...Sh5
      • 2.f6#
    • 1...c3
      • 2.Qxd4#
    • 1...dxe3
      • 2.Qxc4#
  • Tries
    • 1.Qxc4?
      • threat
        • 2.Qxd4#
      • 1...Sxe3
        • 2.Sxd3#
      • 1...Ra4
        • 2.Qxd3#
      • 1...Se2
        • 2.f6#
      • 1...c5!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qxd4#
      • 1...Sxe3
        • 2.Sg6#
      • 1...dxe3
        • 2.Qxc4#
      • 1...Se2
        • 2.f6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(d);N_GUARD::B(H)+P(E)
    • P(e);OGATE,P_SPINP(f)::QAR1(C),XP(f)
    • P(f);OGATEB,P_SPINP(e),XP(B)::QAR2(C),XP(e)
  • Tries
    • Try
      • Q(C);P_PINP(f),XP(e)
      • Threat
        • QAR1(C),XP(f)
      • Vars
        • S(h);N_GUARD,XP(B)::R(F)+S(D),XP(b)
        • R(a);N_GUARD::QAB1(C),XP(b)
        • S(d);N_GUARD::B(H)+P(E)
      • Refutation
        • P(i);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(f)
    • Vars
      • S(h);N_GUARD,XP(B)::R(F)+S(D)
      • P(f);OGATEB,XP(B)::QAR2(C),XP(e)
      • S(d);N_GUARD::B(H)+P(E)
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