MESON Chess Problem Database

Problem Display
PID: 197689 (b1Q5/5N2/3p2K1/3k4/rb6/7p/3r1Bn1/3NR2B w - - 0 1)

Matrenin, Mikhail Vasilevich

Zadachi i Etyudi, 1997

b1Q5/5N2/3p2K1/3k4/rb6/7p/3r1Bn1/3NR2B

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Sc3#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bc6
      • 2.Qe6#
    • 1...h2
      • 2.Bxg2#
  • Tries
    • 1.Se3+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Ke4!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qc4#
      • 1...Sf4+
        • 2.Rxf4#
      • 1...Sh4+
        • 2.Rxh4#
      • 1...Kxe4
        • 2.Qf5#
      • 1...Rc2
        • 2.Rd4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Ba3
        • 2.Sc3#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Ba5
        • 2.Qxa8#
      • 1...Bc5
        • 2.Sc3#
      • 1...Bc6
        • 2.Qf5#
        • 2.Qe6#
      • 1...Se3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD::S(A)
    • B(e);N_GUARD::S(A),XB(e)
    • B(h);SBLOCK::QAB1(G)
    • P(c);N_GUARD::B(C),XS(b)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(f);N_SPINS(b),P-FLIGHT::QAR1(G)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(B);N_PINS(b)
    • Threat
      • QAB1(G)
    • Vars
      • S(b);CHECK,OGATEB::B(C)+R(B),XS(b)
      • K(f);P_SPINS(b),S_FLIGHT,XR(B)::QAB1(G)
      • R(a);N_GUARD::R1(B)
      • R(a);N_GUARD::R1(B),XR(a)
      • B(e);N_GUARD::S(A)
      • B(e);N_GUARD::S(A),XB(e)
      • B(e);S_CUTR(d)::QAB(G),XB(h)
      • S(b);N_GUARD::S(A),XS(b)
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