MESON Chess Problem Database

Problem Display
PID: 202809 (1b5B/1p1p1N2/1p1P2R1/nRrk1N1K/p3p3/8/8/1Q6 w - - 0 1)

Mosiashvili, Givi

Zadachi i Etyudi, 2016

1b5B/1p1p1N2/1p1P2R1/nRrk1N1K/p3p3/8/8/1Q6

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb5
      • 2.Qxb5#
    • 1...Sc4
      • 2.Se7#
    • 1...Sc6
      • 2.Se3#
      • 2.Qa2#
  • Tries
    • 1.Sd8?
      • threat
        • 2.Se3#
      • 1...Rxb5
        • 2.Qxb5#
      • 1...Sc4
        • 2.Se7#
      • 1...e3
        • 2.Sxe3#
        • 2.Qd3#
      • 1...Kc4!
    • 1.Qc2?
      • threat
        • 2.Se7#
      • 1...Bxd6
        • 2.Rxd6#
      • 1...Sc6
        • 2.Se3#
        • 2.Qa2#
      • 1...Kc6!
    • 1.Qd3+?
      • 1...Kc6
        • 2.Sd8#
      • 1...exd3!
    • 1.Qb4?
      • threat
        • 2.Se7#
      • 1...Bxd6
        • 2.Rxd6#
      • 1...Sc6
        • 2.Se3#
      • 1...Kc6!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qxe4#
      • 1...Kc4
        • 2.Se3#
      • 1...Kc6
        • 2.Se7#
      • 1...Rxb5
        • 2.Qxb5#
      • 1...e3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(d);N_SPINR(d),OGATE,XR(B)::QAR2(A),XR(d)
    • S(c);SBLOCK::S(C)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(C)
      • Vars
        • R(d);N_SPINR(d),OGATE,XR(B)::QAR2(A),XR(d)
        • S(c);SBLOCK::S(C)
      • Refutation
        • K(e);N_SPINR(d),P_PINS(C),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • S(C)
      • Vars
        • B(i);OGATE,XP(E)::R1(F),XB(i)
      • Refutation
        • K(e);P_PINS(C),S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);N_SPINR(d),P_PINS(C),S_FLIGHT::S(G)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(C)
      • Vars
        • B(i);OGATE,XP(E)::R1(F),XB(i)
        • S(c);SBLOCK::S(C)
      • Refutation
        • K(e);N_SPINR(d),P_PINS(C),S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • QAB1(A),XP(b)
    • Vars
      • K(e);N_SPINR(d),S_FLIGHT::S(C)
      • R(d);N_SPINR(d),OGATE,XR(B)::QAR2(A),XR(d)
      • P(b);::QAB1(A)
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