MESON Chess Problem Database

Problem Display
PID: 77369 (8/2pnQ3/8/5p2/1n3k2/7P/8/2b1NKRB w - - 0 1)

Paslack, Rainer

stern, 1994

8/2pnQ3/8/5p2/1n3k2/7P/8/2b1NKRB

#2

6 + 6

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Sd3#
    • 1...Sc2
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sd5
      • 2.Sd3#
    • 1...Sa6
      • 2.Sd3#
    • 1...Sc6
      • 2.Sd3#
    • 1...Se5
      • 2.Qg5#
  • Tries
    • 1.Rg3?
      • threat
        • 2.Rf3#
      • 1...Se5
        • 2.Qg5#
      • 1...Sf6
        • 2.Qxc7#
      • 1...Kxg3!
    • 1.Qxb4+?
      • 1...Ke3
        • 2.Rg3#
      • 1...Ke5!
    • 1.Qh4+?
      • 1...Ke3
        • 2.Qf2#
      • 1...Ke5!
    • 1.Qd6+?
      • 1...Ke3
        • 2.Rg3#
      • 1...Se5
        • 2.Qd4#
        • 2.Qh6#
      • 1...cxd6!
    • 1.Qg7?
      • threat
        • 2.Qd4#
        • 2.Qg3#
      • 1...Sf6
        • 2.Qg3#
      • 1...Bb2
        • 2.Qg3#
      • 1...Be3
        • 2.Qg3#
      • 1...Sc2
        • 2.Qg3#
      • 1...Sc6
        • 2.Qg3#
      • 1...Sc5
        • 2.Qg3#
      • 1...Se5
        • 2.Qh6#
        • 2.Qg3#
        • 2.Qg5#
      • 1...c5
        • 2.Qg3#
      • 1...Ke3!
  • Keys
    • 1.Kf2!
      • threat
        • 2.Sg2#
      • 1...Be3+
        • 2.Qxe3#
      • 1...Sd3+
        • 2.Sxd3#
      • 1...Se5
        • 2.Qg5#
      • 1...Sf6
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(b);N_GUARD::S(A)
    • S(b);N_GUARD::S(A),XS(b)
    • S(f);SBLOCK::QAB1(F)
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • S(f);SBLOCK::QAB1(F)
        • S(f);OGATE::QAB(F),XP(e)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
    • Try
      • Q(F);CHECK,XS(b)
      • Vars
        • K(c);S_FLIGHT::R(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::R(C)
      • Refutation
        • P(e);XQ(F)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::QAB1(F)
        • B(a);::QAB1(F)
        • S(b);::QAB1(F)
        • P(e);::QAB1(F)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • S(A)
    • Vars
      • B(a);CHECK,N_GUARD::QAB1(F),XB(a)
      • S(b);CHECK,N_GUARD::S(A),XS(b)
      • S(f);SBLOCK::QAB1(F)
      • S(f);OGATE::QAB(F),XP(e)
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