MESON Chess Problem Database

Problem Display
PID: 196222 (6K1/8/2N2pB1/5R2/2p1k3/5Rpn/1b2pP2/3N1n2 w - - 0 1)

Makarenko, Petr Leontevich

Sachova skladba, 1996

6K1/8/2N2pB1/5R2/2p1k3/5Rpn/1b2pP2/3N1n2

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Sc3#
    • 1...Ba3
      • 2.Sc3#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Sd2
      • 2.Re3#
    • 1...Sh2
      • 2.Re3#
    • 1...Se3
      • 2.Rxe3#
  • Tries
    • 1.Se3?
      • threat
        • 2.R5f4#
        • 2.Rxf6#
      • 1...Sxe3
        • 2.Rxe3#
      • 1...Sf4
        • 2.R5xf4#
      • 1...Kd3!
    • 1.R3f4+?
      • 1...Kd3
        • 2.Rd5#
      • 1...Sxf4!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Rxf6#
      • 1...Kxd3
        • 2.Rd5#
      • 1...cxd3
        • 2.f3#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sf4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::S(A)
    • B(b);N_GUARD::S(A),XB(b)
    • S(a);N_GUARD::R1(C)
    • S(a);N_GUARD::R1(C),XS(a)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);OGATE,XS(A)::R1(C),XS(a)
        • S(e);::B(F)+R(D),DCHECK,XS(e)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(g);S_FLIGHT::B(F)+R(D),DCHECK
      • Refutation
        • S(e);XR(C)
  • Actual
    • R(C);
    • Threat
      • B(F)+R(D),XP(h)
    • Vars
      • K(g);S_FLIGHT,XR(C)::B(F)+R(D),DCHECK
      • P(f);SBLOCK,XR(C)::P(B)
      • B(b);N_GUARD::R1(C),XB(b)
      • S(a);N_GUARD::R1(C),XS(a)
      • S(e);SBLOCK::B(F)+R(D),DCHECK
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