MESON Chess Problem Database

Problem Display
PID: 102494 (2B5/KPP3pQ/Rp2N1r1/1P1k2P1/p4P2/BP4N1/1p5b/r4R2 w - - 0 1)

Labai, Zoltan

3rd HM., Europe Echecs, 1974

2B5/KPP3pQ/Rp2N1r1/1P1k2P1/p4P2/BP4N1/1p5b/r4R2

#2

14 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rxd1#
    • 1...Ra2
      • 2.Rd1#
    • 1...Rxa3
      • 2.Rd1#
    • 1...Rxg5
      • 2.Qd3#
      • 2.Qe4#
    • 1...Rxe6
      • 2.Qd3#
    • 1...Rf6
      • 2.Qd3#
      • 2.Qe4#
    • 1...Rh6
      • 2.Qd3#
      • 2.Qe4#
      • 2.Qf5#
    • 1...Bg1
      • 2.Qh1#
    • 1...Bxg3
      • 2.Qh1#
  • Tries
    • 1.Rxb6?
      • threat
        • 2.Rd6#
      • 1...Rxa3
        • 2.Rd1#
      • 1...Rxe6
        • 2.Qd3#
      • 1...Bxg3
        • 2.Qh1#
      • 1...Bg1
        • 2.Qh1#
      • 1...axb3!
  • Keys
    • 1.Rxa4!
      • threat
        • 2.Rd4#
      • 1...Rxa3
        • 2.Rd1#
      • 1...Rxe6
        • 2.Qd3#
      • 1...Rd1
        • 2.Rxd1#
      • 1...Bg1
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::R(A),XR(a)
    • R(a);N_GUARD::R(A)
    • R(a);N_GUARD,XB(B)::R(A)
    • R(g);OGATE,XS(I)::QAR2(M)
    • B(c);OGATE::QAB(M)
    • B(c);OGATE,XS(D)::QAB(M)
  • Tries
    • Try
      • R(H);XP(f)
      • Threat
        • R1(H)
      • Vars
        • R(a);N_GUARD,XB(B)::R(A)
        • R(g);OGATE,XS(I)::QAR2(M)
        • B(c);OGATE,XS(D)::QAB(M)
        • B(c);OGATE,P_PINR(H)::QAB(M)
      • Refutation
        • P(d);P_PINB(B),XP(C)
  • Actual
    • R(H);XP(d)
    • Threat
      • R1(H)
    • Vars
      • R(a);N_GUARD,P_PINR(H),XB(B)::R(A)
      • R(g);OGATE,XS(I)::QAR2(M)
      • R(a);N_GUARD::R(A),XR(a)
      • B(c);OGATE::QAB(M)
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