MESON Chess Problem Database

Problem Display
PID: 273898 (8/6rk/6p1/3Q4/8/8/1B6/1K6 w - - 0 1)

Vladimirov, Evgeny

Mat, 1972

8/6rk/6p1/3Q4/8/8/1B6/1K6

#2

3 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rg8
      • 2.Qh1#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qxg7#
      • 1...Kg8
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Ra7
        • 2.Qh8#
      • 1...Rb7
        • 2.Qh8#
      • 1...Rc7
        • 2.Qh8#
      • 1...Rd7
        • 2.Qh8#
      • 1...Re7
        • 2.Qh8#
      • 1...Rf7
        • 2.Qh8#
      • 1...Rg8
        • 2.Qh2#
      • 1...Kh6!
    • 1.Qd8?
      • 1...Kh6
        • 2.Qh4#
      • 1...Ra7
        • 2.Qh8#
      • 1...Rb7
        • 2.Qh8#
      • 1...Rc7
        • 2.Qh8#
      • 1...Rd7
        • 2.Qh8#
      • 1...Re7
        • 2.Qh8#
      • 1...Rf7
        • 2.Qh8#
      • 1...Rg8
        • 2.Qh4#
      • 1...g5!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qxg7#
      • 1...Kh6
        • 2.Qh4#
      • 1...Kg8
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Ra7
        • 2.Qh8#
      • 1...Rb7
        • 2.Qh8#
      • 1...Rc7
        • 2.Qh8#
      • 1...Rd7
        • 2.Qh8#
      • 1...Re7
        • 2.Qh8#
      • 1...Rf7
        • 2.Qh8#
      • 1...Rg8
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::QAR(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XR(b)
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XR(b)
        • K(c);P-FLIGHT,P_SPINR(b)::QAB1(C),XR(b)
        • R(b);OGATE,SBLOCK::QAR1(C)
        • R(b);OGATE,P_PINB(B)::QAR1(C)
        • R(b);OGATE::QAR1(C)
        • R(b);SBLOCK::QAR(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(c);N_GUARD,P-FLIGHT::QAR2(C)
        • R(b);SBLOCK::QAR1(C)
        • R(b);P_PINB(B)::QAR1(C)
        • R(b);::QAR1(C)
        • R(b);SBLOCK::QAR(C)
      • Refutation
        • P(a);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XR(b)
    • Vars
      • K(c);N_GUARD,P-FLIGHT::QAR2(C)
      • K(c);S_FLIGHT::QAR1(C),XR(b)
      • K(c);P-FLIGHT,P_SPINR(b)::QAB1(C),XR(b)
      • R(b);OGATE,SBLOCK::QAR1(C)
      • R(b);OGATE,P_PINB(B)::QAR1(C)
      • R(b);OGATE::QAR1(C)
      • R(b);SBLOCK::QAR(C)
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