MESON Chess Problem Database

Problem Display
PID: 11733 (4Q3/7p/6R1/7k/8/5K2/8/8 w - - 0 1)

Kirichenko, Anatoly Yakovlevich

Sp. Comm., Molot, 1971

4Q3/7p/6R1/7k/8/5K2/8/8

#2

3 + 2

3296 Shakhmatny zadachi miniaturi 1987

SOLUTION

  • SOUND
  • Sets
    • 1...h6
      • 2.Rg4#
  • Tries
    • 1.Kg3?
      • 1...h6
        • 2.Rg4#
        • 2.Rg7#
        • 2.Rg8#
      • 1...hxg6!
    • 1.Rg5+?
      • 1...Kh4
        • 2.Rh5#
        • 2.Qh5#
      • 1...Kh6
        • 2.Qh5#
      • 1...Kxg5!
    • 1.Rh6+?
      • 1...Kg5
        • 2.Qh5#
      • 1...Kxh6!
    • 1.Qb5+?
      • 1...Kh4
        • 2.Rh6#
      • 1...Kxg6!
    • 1.Qf7?
      • threat
        • 2.Qxh7#
      • 1...Kh4
        • 2.Qxh7#
      • 1...h6
        • 2.Rg4#
      • 1...hxg6!
    • 1.Qe5+?
      • 1...Kh4
        • 2.Rh6#
        • 2.Qh2#
      • 1...Kxg6!
    • 1.Qe6?
      • threat
        • 2.Qg4#
      • 1...Kh4
        • 2.Qg4#
      • 1...hxg6!
    • 1.Qh8?
      • threat
        • 2.Qxh7#
      • 1...Kh4
        • 2.Qxh7#
      • 1...h6
        • 2.Qxh6#
      • 1...Kxg6!
  • Keys
    • 1.Kf4!
      • 1...Kh4
        • 2.Rh6#
      • 1...hxg6
        • 2.Qh8#
      • 1...h6
        • 2.Rg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB(C)+R(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Refutation
        • P(b);P_SPINP(b),XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XR(B)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Threat
        • QAR2(C),XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR(C),XP(b)
        • P(b);SBLOCK::QAB(C)+R(B)
      • Refutation
        • P(b);P_SPINP(b),XR(B)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • P(b);XR(B)
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR2(C),XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR(C),XP(b)
        • P(b);OGATE::QAR1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XR(B)
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(a);P-FLIGHT::R(B)
      • P(b);OGATEB,P_SPINP(b),SBLOCK,XR(B)::QAR(C)
      • P(b);SBLOCK::QAB(C)+R(B)
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