MESON Chess Problem Database

Problem Display
PID: 268775 (8/1Q2N1q1/2pP2Bn/n1R2p1N/4k3/7R/1b6/5KB1 w - - 0 1)

Moen, Kabe

Problemas, 2020

8/1Q2N1q1/2pP2Bn/n1R2p1N/4k3/7R/1b6/5KB1

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Qb1#
    • 1...Bc1
      • 2.Qb1#
    • 1...Ba3
      • 2.Qb1#
    • 1...Bc3
      • 2.Qb1#
    • 1...Bd4
      • 2.Qb1#
    • 1...Be5
      • 2.Qb1#
    • 1...Bf6
      • 2.Qb1#
    • 1...Sb3
      • 2.Qxc6#
    • 1...Sc4
      • 2.Qxc6#
    • 1...Sg4
      • 2.Bxf5#
    • 1...Sf7
      • 2.Bxf5#
    • 1...Sg8
      • 2.Bxf5#
  • Tries
    • 1.Sxc6?
      • threat
        • 2.Re3#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Qc3
        • 2.Sxa5#
      • 1...Bc1
        • 2.Qb1#
      • 1...Bd4
        • 2.Qb1#
      • 1...Sc4
        • 2.Se7#
      • 1...Sg4
        • 2.Bxf5#
      • 1...Qd4!
    • 1.Qb4+?
      • 1...Qd4
        • 2.Re3#
      • 1...Bd4
        • 2.Re3#
        • 2.Qb1#
      • 1...Sc4!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Re3#
      • 1...Sxf5
        • 2.Bxf5#
      • 1...Qc3
        • 2.Sxh6#
      • 1...Qd4
        • 2.Sxh6#
      • 1...Bc1
        • 2.Qb1#
      • 1...Bd4
        • 2.Qb1#
      • 1...Sc4
        • 2.Qxc6#
      • 1...Sg4
        • 2.Sfxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • B(a);OGATE::QAB(H)
    • S(c);N_GUARD::QAB(H),XP(e)
    • S(f);N_GUARD::B(G),XP(d)
  • Tries
    • Try
      • S(I);XP(e)
      • Threat
        • R1(C)
      • Vars
        • S(c);OGATE,P_SPINS(c),XS(I)::QAB(H),XS(c)
        • Q(g);N_GUARD::QAB(H)+S(I),XS(c)
        • B(a);OGATE::QAB(H)
        • S(c);N_GUARD::QAB(H)+S(I)
        • S(f);N_GUARD::B(G),XP(d)
      • Refutation
        • Q(g);
    • Try
      • Q(H);CHECK
      • Vars
        • Q(g);P_SPINQ(g)::R1(C)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • S(I);P_PINP(e),XP(d)
    • Threat
      • R1(C)
    • Vars
      • S(f);OGATE,P_SPINS(f),XS(I)::B(G),XS(f)
      • Q(g);N_GUARD::B(G)+S(I),XS(f)
      • B(a);OGATE::QAB(H)
      • S(c);N_GUARD::QAB(H),XP(e)
      • S(f);N_GUARD::B(G)+S(I),XQ(g)
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