MESON Chess Problem Database

Problem Display
PID: 92043 (8/2q5/2Q5/Rpp1pR2/3k4/B7/1P3K2/4N3 w - - 0 1)

Taraba, Jozef

4th Prize, Schach-Echo, 1970

8/2q5/2Q5/Rpp1pR2/3k4/B7/1P3K2/4N3

#2

7 + 5

14580 Chess Compositions (Taraba) 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Bc5#
    • 1...e4
      • 2.Qd5#
  • Tries
    • 1.Rf4+?
      • 1...e4
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...exf4!
    • 1.Qxb5?
      • threat
        • 2.Qd3#
      • 1...Ke4
        • 2.Qd3#
      • 1...c4
        • 2.Qd5#
      • 1...e4
        • 2.Sc2#
      • 1...Kd5!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke4
        • 2.Qd3#
      • 1...Qxd6!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qd3#
      • 1...c4
        • 2.Sc2#
      • 1...e4
        • 2.Qc3#

This is a version of 176152

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::B(D)
    • P(d);::QAR1(G)
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • P(d);XR(F)
    • Try
      • Q(G);XP(b)
      • Threat
        • QAR1(G)
      • Vars
        • K(a);P-FLIGHT::QAB1(G)
        • P(c);OGATE::QAR1(G)
        • P(d);SBLOCK::S(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(G)
      • Refutation
        • Q(e);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • K(a);P-FLIGHT::QAB1(G)
      • P(c);SBLOCK::S(A)
      • P(d);SBLOCK::QAB1(G)
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