MESON Chess Problem Database

Problem Display
PID: 140622 (r3k3/3p1p2/3B1Kp1/1R6/4NpQ1/5P2/1R5p/1r6 w q - 0 1)

Kirillov, Valery Afanasievich

Maslov, Boris Grigorevich

Probleemblad, 2010

r3k3/3p1p2/3B1Kp1/1R6/4NpQ1/5P2/1R5p/1r6

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rb8#
    • 1...Ra2
      • 2.Rb8#
    • 1...Ra3
      • 2.Rb8#
    • 1...Ra4
      • 2.Rb8#
    • 1...Ra5
      • 2.Rb8#
    • 1...Ra6
      • 2.Rb8#
    • 1...Ra7
      • 2.Rb8#
    • 1...Rb8
      • 2.Rxb8#
    • 1...Rd8
      • 2.Re5#
    • 1...0-0-0
      • 2.Rc2#
      • 2.Rc5#
      • 2.Rb8#
  • Tries
    • 1.Rxh2?
      • threat
        • 2.Rh8#
      • 1...Kd8
        • 2.Rh8#
      • 1...0-0-0
        • 2.Rc2#
      • 1...Rh1!
    • 1.Rb7?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Rc7#
        • 2.Rb8#
      • 1...Rd8!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Rb8#
      • 1...Ra7
        • 2.Rb8#
      • 1...Rd8
        • 2.Re2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(g);N_GUARD::R(E)
    • R(g);N_GUARD,P_PINB(F)::R(E)
    • R(g);N_GUARD::R(E),XR(g)
    • R(g);SBLOCK::R(E)
  • Tries
    • Try
      • R(A);XP(b)
      • Threat
        • R(A)
      • Vars
        • K(h);P-FLIGHT::R(A)
        • K(h);0-0-0,OGATEB,P_SPINP(e)::R(A)
      • Refutation
        • R(a);
    • Try
      • R(E);
      • Threat
        • QAB1(D),XP(e)
      • Vars
        • K(h);P-FLIGHT::QAR1(D),XP(e)
      • Refutation
        • R(g);
  • Actual
    • S(C);
    • Threat
      • QAB1(D),XP(e)
    • Vars
      • K(h);P-FLIGHT::QAR1(D),XP(e)
      • K(h);0-0-0,P_SPINP(e)::R1(E)
      • R(g);N_GUARD::R(E)
      • R(g);SBLOCK::R(A)
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