MESON Chess Problem Database

Problem Display
PID: 237774 (2N2K2/1ppPp1Q1/1r1P1N1R/3pk2P/Rq5p/B1PPpn1B/6n1/4b1r1 w - - 0 1)

Goldschmeding, Cornelis

Arbejder-Skak, 1947

2N2K2/1ppPp1Q1/1r1P1N1R/3pk2P/Rq5p/B1PPpn1B/6n1/4b1r1

#2

13 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sxd5#
    • 1...Qxa3
      • 2.Sh7#
      • 2.Se8#
      • 2.Sg8#
      • 2.Qxe7#
    • 1...Qxc3
      • 2.Sh7#
      • 2.Se8#
      • 2.Sg8#
      • 2.Qxe7#
    • 1...Qa5
      • 2.Sh7#
      • 2.Se8#
      • 2.Sg8#
      • 2.Qxe7#
    • 1...Qc5
      • 2.Sh7#
      • 2.Se8#
      • 2.Sg8#
      • 2.Qxe7#
    • 1...Qb1
      • 2.Sh7#
      • 2.Se8#
      • 2.Sg8#
      • 2.Qxe7#
    • 1...Qb2
      • 2.Sh7#
      • 2.Se8#
      • 2.Sg8#
      • 2.Qxe7#
    • 1...Qb3
      • 2.Sh7#
      • 2.Se8#
      • 2.Sg8#
      • 2.Qxe7#
    • 1...Qf4
      • 2.Qxe7#
    • 1...Qb5
      • 2.Sh7#
      • 2.Se8#
      • 2.Sg8#
      • 2.Qxe7#
    • 1...Sd2
      • 2.Qg5#
    • 1...Sh2
      • 2.Qg5#
    • 1...Sg5
      • 2.Qxg5#
    • 1...exf6
      • 2.Qxf6#
  • Keys
    • 1.Sxe7!
      • threat
        • 2.Sfxd5#
      • 1...Kf4
        • 2.Sfxd5#
      • 1...Kxd6
        • 2.Se4#
      • 1...Qxd6
        • 2.Sg4#
      • 1...Rxd6
        • 2.Sg6#
      • 1...Qf4
        • 2.Sg6#
      • 1...Qg4
        • 2.Sxg4#
      • 1...Sf4
        • 2.Sg4#
      • 1...d4
        • 2.Sfd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • K(i);P_SPINQ(f),S_FLIGHT::S(H),XP(h)
    • Q(f);P_PINS(H)::QAR2(K),XP(m)
    • S(e);N_GUARD::QAR2(K)
    • S(e);N_GUARD::QAR2(K),XS(e)
    • P(m);OGATE,P_PINP(G),P_SPINP(m),XS(H)::QAB1(K),XP(m)
  • Actual
    • S(L);XP(m)
    • Threat
      • QAB(K)+S(H),XP(h)
    • Vars
      • K(i);P_SPINQ(f),S_FLIGHT::S(H),XP(h)
      • K(i);P_SPINQ(f),S_FLIGHT,XP(G)::R(I)+S(H),DCHECK
      • Q(f);P_PINS(L),XP(G)::QAB(K)+S(H),DCHECK
      • R(j);SBLOCK,XP(G)::S(L)
      • Q(f);P_PINS(H)::S(L)
      • Q(f);::QAB(K)+S(H),DCHECK,XQ(f)
      • S(c);SBLOCK::QAB(K)+S(H),DCHECK
      • P(h);::QAB(K)+S(H)
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