MESON Chess Problem Database

Problem Display
PID: 270533 (Q7/8/4K3/3Nbp2/2n1k3/4P3/2P2R2/8 w - - 0 1)

Petrasinovic, Petrasin

Sinfonie Scacchistiche, 2021

Q7/8/4K3/3Nbp2/2n1k3/4P3/2P2R2/8

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Rf4#
    • 1...Bb2
      • 2.Rf4#
    • 1...Bc3
      • 2.Rf4#
    • 1...Bd4
      • 2.Rf4#
    • 1...Bf4
      • 2.Rxf4#
    • 1...Bf6
      • 2.Rf4#
    • 1...Bg7
      • 2.Rf4#
    • 1...Bh8
      • 2.Rf4#
  • Tries
    • 1.Qa1?
      • threat
        • 2.Qh1#
      • 1...Bxa1
        • 2.Rf4#
      • 1...Sxe3
        • 2.Qxe5#
      • 1...Sd2
        • 2.Qxe5#
      • 1...f4!
    • 1.Qa4?
      • 1...Bh2
        • 2.Qxc4#
      • 1...Ba1
        • 2.Rf4#
      • 1...Bb2
        • 2.Rf4#
      • 1...Bc3
        • 2.Rf4#
      • 1...Bg3
        • 2.Qxc4#
      • 1...Bd4
        • 2.Rf4#
      • 1...Bf4
        • 2.Rxf4#
        • 2.Qxc4#
      • 1...Bd6
        • 2.Qxc4#
      • 1...Bf6
        • 2.Rf4#
      • 1...Bc7
        • 2.Qxc4#
      • 1...Bg7
        • 2.Rf4#
      • 1...Bb8
        • 2.Qxc4#
      • 1...Bh8
        • 2.Rf4#
      • 1...f4!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qh1#
      • 1...Bxh8
        • 2.Rf4#
      • 1...Sxe3
        • 2.Qxe5#
      • 1...Bh2
        • 2.Qd4#
      • 1...Sd2
        • 2.Qxe5#
      • 1...f4
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • B(c);N_GUARD::R1(B)
    • B(c);N_GUARD::R1(B),XB(c)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • B(c);N_GUARD,XQ(F)::R1(B)
        • S(a);N_GUARD,XP(C)::QAR1(F),XB(c)
        • S(a);N_GUARD::QAR1(F),XB(c)
      • Refutation
        • P(d);
    • Try
      • Q(F);P_PINS(a)
      • Vars
        • B(c);N_GUARD::QAR2(F),XS(a)
        • B(c);N_GUARD::R1(B)
        • B(c);N_GUARD,N_SPINS(a)::R1(B)
      • Refutation
        • P(d);
  • Actual
    • Q(F);
    • Threat
      • QAB(F)
    • Vars
      • B(c);N_GUARD,XQ(F)::R1(B)
      • S(a);N_GUARD,XP(C)::QAR1(F),XB(c)
      • B(c);OGATE::QAR1(F)
      • S(a);N_GUARD::QAR1(F),XB(c)
      • P(d);OGATEB::QAB(F)
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