MESON Chess Problem Database

Problem Display
PID: 71298 (1Q6/8/p7/rPp2N2/ppk1B3/3p3r/N1P2p2/1R3Kb1 w - - 0 1)

Basisty, Mark Borisovich

Vasilenko, Anatoly Grigorovich

1st Prize, Sukharev MT, 2005-2006

1Q6/8/p7/rPp2N2/ppk1B3/3p3r/N1P2p2/1R3Kb1

#2

8 + 10

56 The Problemist 2006
145 StrateGems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.cxd3#
    • 1...Rh2
      • 2.cxd3#
    • 1...Rh4
      • 2.cxd3#
    • 1...Rh5
      • 2.cxd3#
    • 1...Rh6
      • 2.cxd3#
    • 1...Rh7
      • 2.cxd3#
    • 1...Rh8
      • 2.cxd3#
    • 1...Rxb5
      • 2.Qg8#
    • 1...axb5
      • 2.Qg8#
  • Tries
    • 1.Bxd3+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Rxd3!
    • 1.Qc7?
      • threat
        • 2.Rxb4#
      • 1...Kxb5
        • 2.Sd6#
      • 1...Rxb5
        • 2.Qf7#
      • 1...b3!
    • 1.c3?
      • threat
        • 2.Sd6#
      • 1...bxc3
        • 2.Qg8#
      • 1...Rh6
        • 2.Se3#
      • 1...Bh2!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Sd6#
      • 1...Kxb5
        • 2.Rxb4#
      • 1...Rh6
        • 2.Bxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(d);N_GUARD::P(D),XP(c)
    • R(h);SBLOCK,XP(F)::QAB(H)
    • P(j);SBLOCK,XP(F)::QAB(H)
  • Tries
    • Try
      • B(E);CHECK,XP(c)
      • Vars
        • K(g);S_FLIGHT::QAR1(H)
      • Refutation
        • R(d);XB(E)
    • Try
      • Q(H);P_PINP(i)
      • Threat
        • R1(A),XP(f)
      • Vars
        • K(g);N_SPINP(i),P_SPINP(f),S_FLIGHT,XP(F)::S(G)
        • R(h);SBLOCK,XP(F)::QAB(H)
      • Refutation
        • P(f);
    • Try
      • P(D);
      • Threat
        • S(G)
      • Vars
        • P(f);XP(D)::QAB(H)
        • R(d);N_GUARD::S(G)
      • Refutation
        • B(a);
  • Actual
    • Q(H);
    • Threat
      • S(G)
    • Vars
      • K(g);P_SPINP(f),S_FLIGHT,XP(F)::R1(A),XP(f)
      • R(d);N_GUARD::B(E),XP(c)
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