MESON Chess Problem Database

Problem Display
PID: 183727 (5b2/3N4/4Q3/3p1R2/K7/2pkP3/2R5/2B5 w - - 0 1)

Utarova, Alana

Kudesnik, 2018

5b2/3N4/4Q3/3p1R2/K7/2pkP3/2R5/2B5

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxd5#
      • 2.Qa6#
  • Tries
    • 1.Kb3?
      • threat
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Bg7
        • 2.Sc5#
      • 1...d4!
    • 1.Se5+?
      • 1...Ke4
        • 2.Rf4#
      • 1...Kxc2!
    • 1.Rd2+?
      • 1...Kc4
        • 2.Rd4#
        • 2.Rf4#
        • 2.Qxd5#
        • 2.Qa6#
      • 1...cxd2!
    • 1.Rxd5+?
      • 1...Kc4
        • 2.Se5#
        • 2.Sb6#
        • 2.Rd1#
        • 2.Rdd2#
        • 2.Rd4#
        • 2.Rd6#
        • 2.Qe4#
      • 1...Kxc2!
    • 1.Qa6+?
      • 1...Ke4
        • 2.Rf4#
      • 1...Kxc2!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Rf4#
      • 1...Kxc2
        • 2.Rf1#
      • 1...Kc4
        • 2.Qa6#
      • 1...Ke4
        • 2.Rf1#
        • 2.Rff2#
        • 2.Rf4#
        • 2.Rf6#
        • 2.Rf7#
        • 2.Rxf8#
      • 1...d4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(d);N_GUARD::S(G),XB(d)
        • B(d);N_GUARD::S(G)
      • Refutation
        • P(c);
    • Try
      • S(G);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(E)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • R(B);CHECK
      • Refutation
        • P(a);XR(B)
    • Try
      • R(E);CHECK,XP(c)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(E)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)+R(E)
    • Vars
      • K(b);S_FLIGHT,XR(B)::QAB(F)+R(E)
      • K(b);P_SPINP(a),S_FLIGHT::QAB(F)
      • P(c);OGATE::QAB(F)+R(E)
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