MESON Chess Problem Database

Problem Display
PID: 164684 (8/8/p1p5/5pK1/Q2N2p1/2k2qR1/2p1P3/2B5 w - - 0 1)

Borisenka, I

Sevcenka, V

Sachmatija, 2007

8/8/p1p5/5pK1/Q2N2p1/2k2qR1/2p1P3/2B5

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Rxd3#
    • 1...Qe3+
      • 2.Rxe3#
  • Tries
    • 1.Sxf3?
      • threat
        • 2.Se1#
        • 2.Sg1#
        • 2.Sd2#
        • 2.Sh2#
        • 2.Sd4#
        • 2.Sh4#
        • 2.Se5#
      • 1...gxf3
        • 2.Rxf3#
      • 1...f4!
    • 1.Sxc6?
      • threat
        • 2.Qb4#
      • 1...Qe3+
        • 2.Rxe3#
      • 1...a5!
  • Keys
    • 1.e3!
      • threat
        • 2.Qb3#
      • 1...Qxe3+
        • 2.Rxe3#
      • 1...Qf4+
        • 2.exf4#
      • 1...Kd3
        • 2.Qxc2#
      • 1...Qd5
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(c);OGATE::R1(C),XQ(c)
    • Q(c);CHECK,OGATE::R(C),XQ(c)
  • Tries
    • Try
      • S(E);XQ(c)
      • Threat
        • DUALS(7)
      • Vars
        • P(d);OGATE,P_SPINP(d),XS(E)::R(C),XP(d)
      • Refutation
        • P(e);
    • Try
      • S(E);XP(g)
      • Threat
        • QAB1(D)
      • Vars
        • Q(c);CHECK,OGATE::R(C),XQ(c)
      • Refutation
        • P(f);
  • Actual
    • P(B);N_PINQ(c)
    • Threat
      • QAR1(D)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XP(B)::R(C),XQ(c)
      • Q(c);CHECK,OGATE::R(C)+P(B),XQ(c)
      • K(b);P-FLIGHT::QAB1(D),XP(a)
      • Q(c);::R(C)+P(B)
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