MESON Chess Problem Database

Problem Display
PID: 146801 (7N/r5bp/2P1k3/2BrP2Q/7p/pR5b/BpNP4/1K6 w - - 0 1)

Soroka, Ivan Ivanovich

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Canadian Chess Chat, 1983

7N/r5bp/2P1k3/2BrP2Q/7p/pR5b/BpNP4/1K6

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Rd3#
    • 1...Rd3
      • 2.Rxd3#
  • Tries
    • 1.Re3?
      • threat
        • 2.Sd4#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Ra4
        • 2.Qf7#
      • 1...Bf5!
    • 1.Rf3?
      • threat
        • 2.Sd4#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Ra4
        • 2.Qe8#
      • 1...Bxe5!
    • 1.Qf7+?
      • 1...Kxe5
        • 2.Re3#
      • 1...Rxf7!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Sd4#
      • 1...Bxe5
        • 2.Qf7#
      • 1...Bf5
        • 2.Qe8#
      • 1...Ra4
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(e);OGATEB,XP(D)::B(B)+R(E)
    • R(e);OGATEB::B(B)+R(E),XR(e)
  • Tries
    • Try
      • R(E);P_PINR(e)
      • Threat
        • S(C)
      • Vars
        • B(h);OGATE,P_SPINB(h),XP(G)::QAR1(H),XB(h)
        • R(g);N_GUARD::QAB1(H)
      • Refutation
        • B(c);P_PINS(C)
    • Try
      • R(E);P_PINR(e)
      • Threat
        • S(C)
      • Vars
        • B(c);N_GUARD,P_PINS(C)::QAB1(H),XB(c)
        • R(g);N_GUARD::QAR2(H)
      • Refutation
        • B(h);XP(G)
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(G)::R(E)
      • Refutation
        • R(g);XQ(H)
  • Actual
    • R(E);P_PINR(e)
    • Threat
      • S(C)
    • Vars
      • B(h);SBLOCK,XP(G)::QAB1(H)
      • B(c);P_PINS(C),SBLOCK::QAR2(H)
      • R(g);N_GUARD::R1(E)
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