MESON Chess Problem Database

Problem Display
PID: 179191 (5B1n/p2N4/n2p3K/1P1kp1pQ/2p2P1R/2P2P1B/3bN3/2qR4 w - - 0 1)

Labai, Zoltan

Phenix, 2017

5B1n/p2N4/n2p3K/1P1kp1pQ/2p2P1R/2P2P1B/3bN3/2qR4

#2

12 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Rxd2#
    • 1...Qa1
      • 2.Rxd2#
    • 1...Sc5
      • 2.Sf6#
    • 1...Sf7+
      • 2.Qxf7#
    • 1...exf4
      • 2.Sxf4#
      • 2.Qxg5#
    • 1...e4
      • 2.Qxg5#
    • 1...gxf4
      • 2.Sxf4#
  • Tries
    • 1.Qg6?
      • threat
        • 2.Be6#
        • 2.Qe4#
        • 2.Qxd6#
        • 2.Qe6#
      • 1...Sf7+
        • 2.Qxf7#
      • 1...Sc7
        • 2.Qe4#
        • 2.Qxd6#
      • 1...Qa3
        • 2.Be6#
        • 2.Rxd2#
        • 2.Qe4#
        • 2.Qe6#
      • 1...Qb1
        • 2.Be6#
        • 2.Qxd6#
        • 2.Qe6#
      • 1...Qc2
        • 2.Be6#
        • 2.Qxd6#
        • 2.Qe6#
      • 1...Sc5
        • 2.Sf6#
        • 2.Qxd6#
      • 1...e4
        • 2.Be6#
        • 2.Qxe4#
        • 2.Qf5#
        • 2.Qxg5#
        • 2.Qxd6#
        • 2.Qe6#
        • 2.fxe4#
      • 1...g4
        • 2.Qxd6#
      • 1...Sxg6!
  • Keys
    • 1.fxe5!
      • threat
        • 2.Rd4#
      • 1...Sf7+
        • 2.Qxf7#
      • 1...gxh4+
        • 2.Sf4#
      • 1...g4+
        • 2.Sf4#
      • 1...Qxc3
        • 2.Sxc3#
      • 1...dxe5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::R(A),XB(b)
    • S(g);SBLOCK::S(K)
    • S(j);CHECK,N_GUARD::QAB(I),XS(j)
    • P(e);OGATEB,P_SPINP(f)::QAR(I),XP(f)
    • P(f);P_SPINP(e),XP(F)::S(B),XP(f)
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(4)
      • Vars
        • S(j);CHECK,N_GUARD::QAB(I),XS(j)
        • P(f);P_PINP(F)::QAR1(I),XP(h)
      • Refutation
        • S(j);XQ(I)
  • Actual
    • P(F);XP(e)
    • Threat
      • R1(G)
    • Vars
      • S(j);CHECK,N_GUARD::QAB(I),XS(j)
      • P(f);CHECK,N_GUARD,XR(G)::S(B)
      • P(f);CHECK,N_GUARD::S(B)
      • Q(a);XP(C)::S(B),XQ(a)
      • P(h);SBLOCK,XP(F)::S(K)
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