MESON Chess Problem Database

Problem Display
PID: 63723 (5N2/5Q2/2Nb2p1/2p5/K3k1rP/1PB1P1PB/2P1RP1n/6n1 w - - 0 1)

Tikkanen, Tapani

Problem (Zagreb), 1965

5N2/5Q2/2Nb2p1/2p5/K3k1rP/1PB1P1PB/2P1RP1n/6n1

#2

13 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qc4+?
      • 1...Kf5
        • 2.e4#
      • 1...Kf3!
    • 1.Qf5+?
      • 1...Kxf5+
        • 2.e4#
      • 1...gxf5!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Se7#
      • 1...Kf3+
        • 2.Sd4#
      • 1...Kd5+
        • 2.Sb4#
      • 1...Kf5+
        • 2.e4#
      • 1...Rg5
        • 2.Se5#
      • 1...Be7
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(L);CHECK
      • Vars
        • K(c);OGATE,P_PINQ(L),P_SPINR(d),S_FLIGHT::P(F)
      • Refutation
        • K(c);P_PINQ(L),S_FLIGHT
    • Try
      • Q(L);CHECK
      • Vars
        • K(c);CHECK,OGATE,P_SPINR(d),S_FLIGHT,XQ(L)::P(F)
      • Refutation
        • P(g);XQ(L)
  • Actual
    • Q(L);
    • Threat
      • QAB(L)+S(K)
    • Vars
      • K(c);CHECK,S_FLIGHT::QAB(L)+S(K),DCHECK
      • K(c);CHECK,OGATE,P_SPINR(d),S_FLIGHT::P(F)
      • R(d);::QAB(L)+S(K)
      • B(f);::QAB(L)+S(K),XB(f)
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