MESON Chess Problem Database

Problem Display
PID: 254573 (Q6R/3prp2/1N2k3/4P3/2b2b1N/4RB1K/3rp3/B7 w - - 0 1)

Moen, Kabe

Die Schwalbe, 2021

Q6R/3prp2/1N2k3/4P3/2b2b1N/4RB1K/3rp3/B7

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re8
      • 2.Rxe8#
      • 2.Qxe8#
    • 1...Bd3
      • 2.Bd5#
      • 2.Qd5#
    • 1...d5
      • 2.Qc6#
  • Tries
    • 1.Rh6+?
      • 1...f6
        • 2.Rxf6#
      • 1...Bxh6!
    • 1.Qe4?
      • threat
        • 2.Qf5#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Re8
        • 2.Rxe8#
      • 1...f5
        • 2.Qxf5#
      • 1...Bd3
        • 2.Qd5#
      • 1...f6!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Bg4#
      • 1...Bxe5
        • 2.Rh6#
      • 1...Re8
        • 2.Qxe8#
      • 1...Bd3
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(f);N_GUARD,S_CUTR(a)::QAR2(H)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • P(h);P_SPINP(h)::R1(I),XP(h)
      • Refutation
        • B(d);XR(I)
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • B(d);OGATE,P_SPINB(d),XP(F)::QAR1(H),XB(d)
        • R(g);OGATEB::R(I),XR(g)
        • P(h);::QAB1(H),XP(h)
        • B(c);N_GUARD,S_CUTR(a)::QAB1(H)
      • Refutation
        • P(h);
  • Actual
    • Q(H);P_PINP(h)
    • Threat
      • B(C)
    • Vars
      • B(d);N_GUARD,P_SPINB(d),XP(F)::R(I)
      • R(g);OGATEB::QAR2(H),XR(g)
      • B(c);N_GUARD,S_CUTR(a)::B(C)
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