MESON Chess Problem Database

Problem Display
PID: 244793 (8/1N3R2/3p4/1P1k4/4N3/1pB1K3/3P4/Q7 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Sachove umeni (Ceskoslovensky sach), 1978

8/1N3R2/3p4/1P1k4/4N3/1pB1K3/3P4/Q7

#2

8 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b2
      • 2.Qa2#
  • Tries
    • 1.Kd3?
      • 1...b2
        • 2.Qa2#
      • 1...Ke6!
    • 1.Sg5?
      • 1...b2
        • 2.Qa2#
      • 1...Kc4!
    • 1.Sexd6?
      • 1...b2
        • 2.Qa2#
      • 1...Ke6!
    • 1.Sf6+?
      • 1...Kc4
        • 2.Qf1#
        • 2.Qa4#
      • 1...Ke6!
    • 1.Sa5?
      • 1...b2
        • 2.Qa2#
      • 1...Ke6!
    • 1.Sbxd6?
      • 1...b2
        • 2.Qa2#
      • 1...Ke6!
    • 1.Sd8?
      • 1...b2
        • 2.Qa2#
      • 1...Kc4!
    • 1.Rf5+?
      • 1...Kc4
        • 2.Sexd6#
        • 2.Sa5#
        • 2.Sbxd6#
        • 2.Qf1#
        • 2.Qa4#
        • 2.d3#
      • 1...Ke6!
    • 1.Rf6?
      • 1...b2
        • 2.Qa2#
      • 1...Kc4!
    • 1.Rc7?
      • 1...b2
        • 2.Qa2#
      • 1...Ke6!
    • 1.Re7?
      • 1...b2
        • 2.Qa2#
      • 1...Kc4!
    • 1.Qb1?
      • threat
        • 2.Qxb3#
      • 1...Kc4
        • 2.Qd3#
      • 1...b2
        • 2.Qa2#
      • 1...Ke6!
    • 1.Qf1?
      • 1...Ke6
        • 2.Qf5#
      • 1...b2!
    • 1.Qh1?
      • 1...Kc4
        • 2.Sexd6#
      • 1...Ke6
        • 2.Sg5#
      • 1...b2!
    • 1.Qa4?
      • threat
        • 2.Qxb3#
      • 1...b2
        • 2.Qb3#
        • 2.Qa2#
      • 1...Ke6!
    • 1.Qa6?
      • 1...Kc4
        • 2.Qc6#
      • 1...b2
        • 2.Qa2#
      • 1...Ke6!
    • 1.d3?
      • 1...b2
        • 2.Qa2#
      • 1...Ke6!
  • Keys
    • 1.Qa8!
      • 1...Kc4
        • 2.Sbxd6#
      • 1...Ke6
        • 2.Sd8#
      • 1...b2
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::QAB(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);XP(c)
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(G);
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(G);XP(c)
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(G);
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::S(E),XP(c)
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • P(B);
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::S(G),XP(c)
      • K(b);S_FLIGHT::S(G)
      • P(a);OGATEB::QAB(A)
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