MESON Chess Problem Database

Problem Display
PID: 15737 (8/K5p1/1B4pq/1P6/1R6/p2p1P2/N1Pk4/3B1R2 w - - 0 1)

Rychkov, Vladimir Nikolaevich

3/4 Prize, October Revolution-70 JT, 1987

8/K5p1/1B4pq/1P6/1R6/p2p1P2/N1Pk4/3B1R2

#2

9 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Rb3?
      • threat
        • 2.Rxd3#
      • 1...dxc2
        • 2.Ba5#
      • 1...Qe3!
    • 1.Rd4?
      • threat
        • 2.Rxd3#
      • 1...Qe3
        • 2.Ba5#
      • 1...Ke3!
    • 1.Re4?
      • threat
        • 2.Ba5#
      • 1...Qe3
        • 2.Bxe3#
      • 1...dxc2!
  • Keys
    • 1.Ba5!
      • threat
        • 2.Re4#
      • 1...Qe3+
        • 2.Rd4#
      • 1...Ke3
        • 2.Re4#
      • 1...dxc2
        • 2.Rb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);
      • Threat
        • R1(F),XP(c)
      • Vars
        • P(c);XP(D)::B(H)
      • Refutation
        • Q(e);P_PINB(H)
    • Try
      • R(F);P_PINP(c)
      • Threat
        • R1(F),XP(c)
      • Vars
        • Q(e);SBLOCK::B(H)
      • Refutation
        • K(a);N_SPINP(c),S_FLIGHT
    • Try
      • R(F);
      • Threat
        • B(H)
      • Vars
        • Q(e);N_GUARD,P_PINB(H)::B(H),XQ(e)
      • Refutation
        • P(c);XP(D)
  • Actual
    • B(H);
    • Threat
      • B(H)+R(F)
    • Vars
      • Q(e);CHECK,SBLOCK::B(H)+R(F)
      • K(a);S_FLIGHT::R1(F)
      • P(c);XP(D)::B(H)+R(F)
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