MESON Chess Problem Database

Problem Display
PID: 45728 (KR5B/8/8/Q7/3p4/8/PP2N3/rk1B4 w - - 0 1)

Pilchenko, Viacheslav Karlovich

1st Prize, Moscow Ty., 2001

KR5B/8/8/Q7/3p4/8/PP2N3/rk1B4

#2

8 + 3

145 StrateGems 2002
56 The Problemist 2002
23 Die Schwalbe 2010
15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...Kc1
        • 2.Qg5#
      • 1...dxc3!
    • 1.Ba4?
      • 1...Kxa2
        • 2.Bc2#
      • 1...Rxa2
        • 2.Qe1#
      • 1...d3!
    • 1.Rc8?
      • 1...Kxb2
        • 2.Rb8#
      • 1...d3
        • 2.Rc1#
      • 1...Rxa2!
    • 1.Qe1?
      • 1...Rxa2+
        • 2.Ba4#
      • 1...d3
        • 2.Bb3#
      • 1...Kxa2!
  • Keys
    • 1.Bb3!
      • 1...Kxb2
        • 2.Bd1#
      • 1...Rxa2
        • 2.Qxa2#
      • 1...d3
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(E)
      • Refutation
        • P(c);XS(D)
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT,XP(B)::QAR(E)+B(A)
        • R(a);SBLOCK,XP(B)::QAR(E)
      • Refutation
        • P(c);
    • Try
      • R(G);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(c),XP(C)::R(G)
        • P(c);::R1(G)
      • Refutation
        • R(a);P_PINQ(E),XP(B)
    • Try
      • Q(E);P_SPINP(B)
      • Vars
        • R(a);CHECK,SBLOCK,XP(B)::QAR(E)+B(A)
        • P(c);::QAR(E)+B(A)
      • Refutation
        • K(b);S_FLIGHT,XP(B)
  • Actual
    • B(A);
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINP(c),XP(C)::R(G)+B(A)
      • R(a);OGATE,P_PINQ(E),XP(B)::QAB1(E),XR(a)
      • P(c);::QAR(E)
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