MESON Chess Problem Database

Problem Display
PID: 153890 (1n5Q/5R1K/2R2N1p/1rp2kp1/2N5/2np2P1/4q2B/b3r3 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Novi Temi, 1972

1n5Q/5R1K/2R2N1p/1rp2kp1/2N5/2np2P1/4q2B/b3r3

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.g4#
    • 1...Qa2
      • 2.g4#
    • 1...Qb2
      • 2.g4#
    • 1...Qc2
      • 2.g4#
    • 1...Qd2
      • 2.g4#
    • 1...Qf2
      • 2.g4#
    • 1...Qe3
      • 2.g4#
    • 1...Qe5
      • 2.g4#
    • 1...Qe6
      • 2.g4#
    • 1...Qe7
      • 2.g4#
    • 1...Qe8
      • 2.g4#
  • Tries
    • 1.Se3+?
      • 1...Qxe3
        • 2.g4#
      • 1...Ke5!
    • 1.Sd6+?
      • 1...Ke6
        • 2.Qe8#
      • 1...Ke5!
    • 1.Se4+?
      • 1...Kxe4
        • 2.Qe5#
      • 1...Kg4!
    • 1.Sg4+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxg4!
    • 1.Sd5+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kg4!
    • 1.Sh5+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kg4!
    • 1.Sd7+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kg4!
    • 1.Se8+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kg4!
    • 1.Sg8+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kg4!
    • 1.Qc8+?
      • 1...Qe6
        • 2.g4#
      • 1...Sd7!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Sd6#
      • 1...Qxe8
        • 2.g4#
      • 1...g4
        • 2.Se4#
      • 1...Qe5
        • 2.g4#
      • 1...Qe6
        • 2.g4#
      • 1...Qe7
        • 2.g4#
      • 1...Se4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD::P(B)
    • Q(c);N_GUARD,P_PINR(F)::P(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • Q(c);XS(C)::P(B)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(h);S_FLIGHT::QAR2(H)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(h);S_FLIGHT,XS(E)::QAR1(H)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(h);S_FLIGHT::QAR1(H)
      • Refutation
        • K(h);S_FLIGHT,XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • K(h);S_FLIGHT::QAR1(H)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(h);S_FLIGHT::QAR1(H)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(h);S_FLIGHT::QAR1(H)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(h);S_FLIGHT::QAR1(H)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(h);S_FLIGHT::QAR1(H)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • Q(c);P_SPINQ(c)::P(B)
      • Refutation
        • S(k);P_SPINS(k)
  • Actual
    • Q(H);
    • Threat
      • S(C)
    • Vars
      • Q(c);N_GUARD,XQ(H)::P(B)
      • P(i);SBLOCK::R(F)+S(E)
      • Q(c);N_GUARD::P(B)
      • Q(c);N_GUARD,P_PINR(F)::P(B)
      • S(d);S_CUTQ(c)::QAB1(H)
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