MESON Chess Problem Database

Problem Display
PID: 251123 (4NbQ1/4p3/1K2p3/Rb1pkp2/2ppBp2/r2p4/4N3/4R2r w - - 0 1)

Labai, Zoltan

Uralski Problemist, 2012

4NbQ1/4p3/1K2p3/Rb1pkp2/2ppBp2/r2p4/4N3/4R2r

#2

7 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Sg1#
    • 1...dxe4
      • 2.Rxb5#
    • 1...fxe4
      • 2.Qg5#
  • Tries
    • 1.Bxf5?
      • threat
        • 2.Qxe6#
      • 1...Kxf5
        • 2.Sxd4#
      • 1...exf5
        • 2.Sg1#
      • 1...Rh6
        • 2.Sg3#
      • 1...Bd7!
    • 1.Qg7+?
      • 1...Kxe4
        • 2.Sg1#
      • 1...Bxg7!
  • Keys
    • 1.Bxd5!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Sxf4#
      • 1...exd5
        • 2.Sg1#
      • 1...Rh6
        • 2.Sc3#
      • 1...Bd7
        • 2.Sg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • K(i);P-FLIGHT,XB(C)::R(A)+S(B)
    • P(h);OGATEB,P_SPINB(g),SBLOCK,XB(C)::R(D),XB(g)
    • P(j);OGATEB,SBLOCK,XB(C)::QAR2(G)
  • Tries
    • Try
      • B(C);XP(j)
      • Threat
        • QAR1(G),XP(k)
      • Vars
        • K(i);N_GUARD,P-FLIGHT,S_CUTR(a),XB(C)::S(B),XP(e)
        • P(k);SBLOCK,XB(C)::R(A)+S(B)
        • R(a);N_GUARD::R(A)+S(B)
      • Refutation
        • B(g);P_SPINP(h)
    • Try
      • Q(G);CHECK
      • Vars
        • K(i);P-FLIGHT,S_CUTB(m),XB(C)::R(A)+S(B)
      • Refutation
        • B(m);XQ(G)
  • Actual
    • B(C);XP(h)
    • Threat
      • QAR1(G),XP(k)
    • Vars
      • K(i);N_GUARD,P-FLIGHT,P_SPINB(g),P_SPINP(k),S_CUTR(a),XB(C)::S(B),XP(f)
      • P(k);XB(C)::R(A)+S(B)
      • R(a);N_GUARD::R(A)+S(B)
      • B(g);::R(A)+S(B)
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