MESON Chess Problem Database

Problem Display
PID: 238048 (5r2/1p1B2n1/8/2PR3r/1N2k3/2Kp1R1p/4bB2/1Q2N3 w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Shakhmaty v SSSR, 1984

5r2/1p1B2n1/8/2PR3r/1N2k3/2Kp1R1p/4bB2/1Q2N3

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rd4#
    • 1...Rf4
      • 2.Re3#
    • 1...Bd1
      • 2.Qxd3#
  • Tries
    • 1.Sbxd3?
      • threat
        • 2.Rd4#
      • 1...Kxd5
        • 2.Qxb7#
      • 1...Rxd5
        • 2.Re3#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Sf5
        • 2.Re5#
      • 1...Se6!
  • Keys
    • 1.Sexd3!
      • threat
        • 2.Re3#
      • 1...Kxf3
        • 2.Qh1#
      • 1...Rxf3
        • 2.Rd4#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Bxf3
        • 2.Rd4#
      • 1...Sf5
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(e);SBLOCK::R1(H)
    • R(h);SBLOCK::R1(E)
    • B(a);N_GUARD::QAB1(A),XP(b)
  • Tries
    • Try
      • S(F);XP(b)
      • Threat
        • R1(H)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(H)::QAB(A),XP(f)
        • R(e);SBLOCK,XR(H)::R1(E)
        • B(a);OGATE,P_SPINB(a),XS(F)::QAB1(A),XB(a)
        • S(g);S_CUTR(e)::R1(H)
      • Refutation
        • S(g);
  • Actual
    • S(B);XP(b)
    • Threat
      • R1(E)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(E)::QAB(A)
      • R(h);P_PINS(B),SBLOCK,XR(E)::R1(H)
      • B(a);OGATE,P_SPINB(a),XS(B)::QAB1(A),XB(a)
      • B(a);SBLOCK,XR(E)::R1(H)
      • S(g);S_CUTR(h)::R1(E)
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