MESON Chess Problem Database

Problem Display
PID: 235419 (1N1R1n2/B1pb4/2pb1Q1K/Rqpk2N1/1p1p4/1PP5/1n6/8 w - - 0 1)

Pituk, Alexander

Source?, 1955

1N1R1n2/B1pb4/2pb1Q1K/Rqpk2N1/1p1p4/1PP5/1n6/8

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qxd4#
    • 1...Qe2
      • 2.Qxd4#
    • 1...Qa4
      • 2.Qxd4#
    • 1...Qa6
      • 2.Qxd4#
    • 1...Qb6
      • 2.Qxd4#
    • 1...Qb7
      • 2.Qxd4#
    • 1...Qxb8
      • 2.Qxd4#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Be8
      • 2.Qf5#
    • 1...c4
      • 2.Qxd4#
  • Keys
    • 1.Sxc6!
      • threat
        • 2.Qf3#
      • 1...Kxc6
        • 2.Qf3#
      • 1...Qxc6
        • 2.Qxd4#
      • 1...Bxc6
        • 2.Qf5#
      • 1...Qf1
        • 2.Sxb4#
      • 1...Qe2
        • 2.Sxb4#
      • 1...Qd3
        • 2.Sxb4#
      • 1...Bh2
        • 2.Se7#
      • 1...Bg3
        • 2.Se7#
      • 1...Bf4
        • 2.Se7#
      • 1...Be5
        • 2.Se7#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg4
        • 2.Se7#
      • 1...Bf5
        • 2.Se7#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 10
    • REMOVED MATES = 7
  • Sets
    • Q(d);P_SPINP(e)::QAR1(E),XP(c)
    • Q(d);P_SPINP(e),XS(H)::QAR1(E),XP(c)
    • B(j);N_GUARD,P_SPINB(h)::QAR2(E),XB(j)
    • B(j);N_GUARD,P_SPINB(h)::QAR2(E)
    • P(e);N_GUARD,P_SPINQ(d)::QAR1(E),XP(c)
  • Actual
    • S(H);XP(g)
    • Threat
      • QAB(E)
    • Vars
      • K(f);P_SPINB(h),S_FLIGHT,XS(H)::QAB(E)
      • Q(d);P_SPINP(e),SBLOCK,XS(H)::QAR1(E),XP(c)
      • B(j);N_GUARD,P_SPINB(h),SBLOCK,XS(H)::QAR2(E)
      • Q(d);N_GUARD,P_SPINP(e)::S(H),XP(b)
      • B(h);N_GUARD,P_SPINB(j)::S(H)
      • B(h);N_GUARD,P_PINS(D),P_SPINB(j)::S(H)
      • B(h);N_GUARD,P_SPINB(j)::S(H),XB(h)
      • B(j);P_SPINB(h)::S(H)
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