MESON Chess Problem Database

Problem Display
PID: 211180 (3r2b1/8/3p3B/2N2p2/RN1k4/6P1/3K4/4RB2 w - - 0 1)

Dragan, Nicholae A

Schach-Echo, 1971

3r2b1/8/3p3B/2N2p2/RN1k4/6P1/3K4/4RB2

#2

8 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Be3#
    • 1...Bb3
      • 2.Sxb3#
    • 1...Be6
      • 2.Sxe6#
    • 1...Bh7
      • 2.Sb3#
      • 2.Se6#
    • 1...dxc5
      • 2.Bg7#
    • 1...d5
      • 2.Sbd3#
      • 2.Sba6#
      • 2.Sb3#
  • Tries
    • 1.Sbd3+?
      • 1...Kd5
        • 2.Bg2#
      • 1...Bc4!
    • 1.Sba6+?
      • 1...Kd5
        • 2.Bg2#
      • 1...Bc4!
    • 1.Re4+?
      • 1...Kxc5
        • 2.Be3#
      • 1...fxe4!
    • 1.Re6?
      • threat
        • 2.Sb3#
        • 2.Be3#
      • 1...Kxc5
        • 2.Be3#
      • 1...dxc5
        • 2.Be3#
        • 2.Bg7#
      • 1...f4
        • 2.Sb3#
      • 1...Bxe6!
  • Keys
    • 1.Re5!
      • threat
        • 2.Sc6#
      • 1...Kxe5
        • 2.Bg7#
      • 1...dxe5
        • 2.Be3#
      • 1...Bd5
        • 2.Rxd5#
      • 1...d5
        • 2.Sbd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • K(a);S_FLIGHT,XS(G)::B(H)
    • B(e);N_GUARD::S(G),XB(e)
    • P(c);SBLOCK,XS(G)::B(H)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • S(F);CHECK
      • Vars
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(G)::B(H)
      • Refutation
        • P(b);XR(A)
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT,XS(G)::B(H)
        • P(b);::S(G)
      • Refutation
        • B(e);XR(A)
  • Actual
    • R(A);
    • Threat
      • R(E)+S(F),DCHECK
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(A)::B(H)
      • P(c);SBLOCK,XR(A)::B(H)
      • B(e);N_GUARD::R1(A),XB(e)
      • P(c);S_CUTB(e)::R(E)+S(F)
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