MESON Chess Problem Database

Problem Display
PID: 248148 (2bN3b/2r5/pR6/P1kp1p2/1R1p1r2/3PNP2/1PK4B/6Q1 w - - 0 1)

Markevitch, Alex

StrateGems, 2021

2bN3b/2r5/pR6/P1kp1p2/1R1p1r2/3PNP2/1PK4B/6Q1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Bd6#
    • 1...Re4
      • 2.Bd6#
    • 1...Rg4
      • 2.Bd6#
    • 1...Rh4
      • 2.Bd6#
    • 1...Rd7
      • 2.Se6#
    • 1...Be6
      • 2.Sxe6#
    • 1...Bb7
      • 2.Se6#
  • Tries
    • 1.Kb3?
      • threat
        • 2.Qc1#
      • 1...Rc6
        • 2.Rxc6#
      • 1...dxe3!
  • Keys
    • 1.Rxd4!
      • threat
        • 2.Rxd5#
      • 1...Kxd4+
        • 2.Sc4#
      • 1...Rxd4
        • 2.Bd6#
      • 1...Bxd4
        • 2.b4#
      • 1...Rd7
        • 2.Se6#
      • 1...Be6
        • 2.Sxe6#
      • 1...Bb7
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(b);OGATE,XP(G)::B(D)
    • R(b);OGATE::B(D)
    • R(g);S_CUTB(h)::S(K)
    • B(h);N_GUARD::S(K),XB(h)
    • B(h);N_GUARD::S(K)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • R(g);N_GUARD::R1(J),XR(g)
      • Refutation
        • P(a);P_SPINP(a),XS(F)
  • Actual
    • R(H);XP(a)
    • Threat
      • R1(H),XP(d)
    • Vars
      • K(c);CHECK,S_FLIGHT,XR(H)::QAB(A)+S(F)
      • R(b);OGATE,SBLOCK,XR(H)::B(D)
      • B(i);SBLOCK,XR(H)::P(B)
      • R(g);S_CUTB(h)::S(K)
      • B(h);N_GUARD::S(K),XB(h)
      • B(h);N_GUARD::S(K)
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