MESON Chess Problem Database

Problem Display
PID: 218827 (4Q3/nK6/1p1R2p1/2P1p1r1/r1pNk1Pn/3Np2R/2P2p2/4b3 w - - 0 1)

Vesz, Albert

British Chess Magazine, 1923

4Q3/nK6/1p1R2p1/2P1p1r1/r1pNk1Pn/3Np2R/2P2p2/4b3

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg4
      • 2.Qxe5#
    • 1...Sf5
      • 2.Qxe5#
    • 1...Sb5
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sc8
      • 2.Qc6#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qd5#
      • 1...exd4
        • 2.Qf4#
      • 1...cxd3!
  • Keys
    • 1.Se2!
      • threat
        • 2.Rd4#
      • 1...Rxg4
        • 2.Qxe5#
      • 1...cxd3
        • 2.cxd3#
      • 1...bxc5
        • 2.Sxc5#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Sf3
        • 2.Sg3#
      • 1...Sf5
        • 2.Qxe5#
      • 1...Sb5
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...c3
        • 2.Qxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(i);N_GUARD,XP(E)::QAR1(I),XP(h)
    • S(g);S_CUTR(i)::QAR1(I),XP(h)
    • S(l);N_GUARD::QAB(I)
    • S(l);N_GUARD::QAB(I),XS(l)
  • Tries
    • Try
      • Q(I);N_PINP(h)
      • Threat
        • QAB1(I)
      • Vars
        • P(h);N_GUARD,XS(D)::QAR1(I)
      • Refutation
        • P(e);XS(B)
  • Actual
    • S(D);
    • Threat
      • R1(G)
    • Vars
      • R(i);N_GUARD,XP(E)::QAR1(I),XP(h)
      • P(e);OGATE,XS(B)::P(A),XP(e)
      • P(j);XP(F)::S(B),XP(j)
      • B(a);N_GUARD::S(D),XB(a)
      • S(g);SBLOCK::S(D)
      • S(g);S_CUTR(i)::QAR1(I),XP(h)
      • S(l);N_GUARD::QAB(I)
      • S(l);N_GUARD::QAB(I),XS(l)
      • P(e);OGATEB::QAR(I),XR(d)
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