MESON Chess Problem Database

Problem Display
PID: 86831 (2K3b1/1NPpP3/R7/1kB1r3/R1n1p3/8/8/r2B2Q1 w - - 0 1)

Slesarenko, Anatoly Vasilevich

Bata-80 JT, 1988

2K3b1/1NPpP3/R7/1kB1r3/R1n1p3/8/8/r2B2Q1

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Qxc5#
    • 1...Sb2
      • 2.Sd6#
      • 2.Rb6#
    • 1...Sd2
      • 2.Sd6#
      • 2.Rb6#
    • 1...Sa3
      • 2.Sd6#
      • 2.Rb6#
    • 1...Se3
      • 2.Rb6#
    • 1...Sa5
      • 2.Rb6#
    • 1...Sb6+
      • 2.Rxb6#
    • 1...Sd6+
      • 2.Sxd6#
  • Tries
    • 1.Be2?
      • threat
        • 2.Sd6#
      • 1...Rxg1
        • 2.R4a5#
      • 1...Rxa4
        • 2.Rb6#
      • 1...Rd1
        • 2.R4a5#
      • 1...Rd5
        • 2.Bxc4#
      • 1...Re6
        • 2.Bxc4#
      • 1...d6
        • 2.Sxd6#
      • 1...e3!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Rb6#
      • 1...Rxd1
        • 2.R4a5#
      • 1...Rxc5
        • 2.Sd6#
      • 1...Re6
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(e);OGATE,P_PINP(G),XB(D)::QAR1(B),XR(e)
    • S(b);N_GUARD::R1(E)
    • S(b);CHECK,N_GUARD::R1(E),XS(b)
    • S(b);CHECK,N_GUARD::S(F),XS(b)
  • Tries
    • Try
      • B(A);P_PINS(b)
      • Threat
        • S(F)
      • Vars
        • R(a);N_GUARD,XQ(B)::R1(C)
        • R(a);SBLOCK,XR(C)::R1(E)
        • R(a);N_GUARD::R1(C)
        • R(e);S_CUTB(g)::B(A),XS(b)
        • P(f);::S(F),XP(f)
      • Refutation
        • P(c);
  • Actual
    • Q(B);P_PINS(b)
    • Threat
      • R1(E)
    • Vars
      • R(a);N_GUARD,XB(A)::R1(C)
      • R(e);P_PINP(G),SBLOCK,XB(D)::S(F)
      • R(e);S_CUTB(g)::QAB1(B),XS(b)
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