MESON Chess Problem Database

Problem Display
PID: 119199 (8/Q5K1/p3P3/1RN2b2/rp6/b1kpNp2/1ppn4/2qR2B1 w - - 0 1)

Zajic, Helmut

US Problem Bulletin, 1993

8/Q5K1/p3P3/1RN2b2/rp6/b1kpNp2/1ppn4/2qR2B1

#2

8 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Sxa4#
    • 1...Sc4
      • 2.Sd5#
    • 1...Se4
      • 2.Rxd3#
    • 1...b3
      • 2.Sxa4#
  • Tries
    • 1.Kh6?
      • threat
        • 2.Qg7#
      • 1...Kd4
        • 2.Qg7#
      • 1...Sb3
        • 2.Sxa4#
      • 1...Se4
        • 2.Rxd3#
      • 1...b3
        • 2.Sxa4#
      • 1...Sc4!
    • 1.Kf8?
      • threat
        • 2.Qg7#
      • 1...Kd4
        • 2.Qg7#
      • 1...Sb3
        • 2.Sxa4#
      • 1...Sc4
        • 2.Sd5#
      • 1...Se4
        • 2.Rxd3#
      • 1...b3!
  • Keys
    • 1.Kh8!
      • threat
        • 2.Qg7#
      • 1...Kd4
        • 2.Qg7#
      • 1...Sb3
        • 2.Sxa4#
      • 1...Sc4
        • 2.Sd5#
      • 1...Se4
        • 2.Rxd3#
      • 1...b3
        • 2.Sxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::S(E),XR(i)
    • S(d);SBLOCK::S(C)
    • S(d);OGATE::R1(A),XP(g)
    • P(j);::S(E),XR(i)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Threat
        • QAB(G)
      • Vars
        • K(f);S_FLIGHT::QAB(G)
        • S(d);P_PINS(C),SBLOCK::S(E),XR(i)
        • S(d);OGATE,P_PINS(C)::R1(A),XP(g)
        • P(j);::S(E),XR(i)
      • Refutation
        • S(d);P_PINS(C)
    • Try
      • K(H);S_FLIGHT
      • Threat
        • QAB(G)
      • Vars
        • K(f);S_FLIGHT::QAB(G)
        • S(d);SBLOCK::S(E),XR(i)
        • S(d);SBLOCK::S(C)
        • S(d);OGATE::R1(A),XP(g)
      • Refutation
        • P(j);P_PINS(E)
  • Actual
    • K(H);S_FLIGHT
    • Threat
      • QAB(G)
    • Vars
      • K(f);S_FLIGHT::QAB(G)
      • S(d);SBLOCK::S(E),XR(i)
      • S(d);SBLOCK::S(C)
      • S(d);OGATE::R1(A),XP(g)
      • P(j);::S(E),XR(i)
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