MESON Chess Problem Database

Problem Display
PID: 138753 (3q2r1/b2n4/r7/3PPk1P/1p3PN1/3PpB1p/6NK/8 w - - 0 1)

Sibinovski, Zoran

StrateGems, 2010

3q2r1/b2n4/r7/3PPk1P/1p3PN1/3PpB1p/6NK/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sh6#
    • 1...Ra2
      • 2.Sh6#
    • 1...Ra3
      • 2.Sh6#
    • 1...Ra4
      • 2.Sh6#
    • 1...Ra5
      • 2.Sh6#
    • 1...Rb6
      • 2.S4xe3#
    • 1...Rh6
      • 2.Sxh6#
    • 1...Rxg4
      • 2.Be4#
    • 1...Bb6
      • 2.Sh6#
    • 1...Bb8
      • 2.S4xe3#
    • 1...Sc5
      • 2.S4xe3#
    • 1...Sb6
      • 2.S4xe3#
      • 2.Sh6#
    • 1...Sf6
      • 2.Sh6#
  • Tries
    • 1.Kxh3?
      • threat
        • 2.Be4#
      • 1...Sc5
        • 2.S4xe3#
      • 1...Sf6
        • 2.Sh6#
      • 1...Qh4+!
  • Keys
    • 1.Kg3!
      • threat
        • 2.Be4#
      • 1...Qh4+
        • 2.Sxh4#
      • 1...Rxg4+
        • 2.Bxg4#
      • 1...Sc5
        • 2.Sxe3#
      • 1...Sf6
        • 2.Sh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(e);N_GUARD::S(F)
    • R(e);N_GUARD,P_PINS(A)::S(F)
    • R(e);S_CUTB(f)::S(F),XP(a)
    • R(e);N_GUARD::S(F),XR(e)
    • R(i);SBLOCK,XS(F)::B(D)
    • B(f);S_CUTR(e)::S(F)
    • B(f);N_GUARD::S(F),XP(a)
    • S(g);S_CUTB(f)::S(F),XP(a)
    • S(g);S_CUTR(e)::S(F)
  • Tries
    • Try
      • K(B);P-FLIGHT,XP(b)
      • Threat
        • B(D)
      • Vars
        • S(g);S_CUTB(f)::S(F),XP(a)
        • S(g);S_CUTR(e)::S(F)
      • Refutation
        • Q(h);CHECK
  • Actual
    • K(B);P_SPINS(F),S_FLIGHT
    • Threat
      • B(D)
    • Vars
      • Q(h);CHECK,N_GUARD::S(A),XQ(h)
      • R(i);CHECK,OGATE,XS(F)::B(D),XR(i)
      • S(g);S_CUTB(f)::S(A),XP(a)
      • S(g);S_CUTQ(h)::S(A)
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