MESON Chess Problem Database

Problem Display
PID: 21847 (2R3B1/KQ1p4/4q3/p1PNP3/p1k5/5N2/1RprP3/8 w - - 0 1)

Goethart, Gerhardus Hendrik

2nd Prize, Hampshire Post, 1921

2R3B1/KQ1p4/4q3/p1PNP3/p1k5/5N2/1RprP3/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Qa6#
      • 2.Qb5#
    • 1...Qg4
      • 2.Qa6#
      • 2.Qb5#
    • 1...Qf5
      • 2.Qa6#
      • 2.Qb5#
    • 1...Qxe5
      • 2.Qa6#
      • 2.Qb5#
    • 1...Qa6+
      • 2.Qxa6#
    • 1...Qb6+
      • 2.cxb6#
    • 1...Qd6
      • 2.Qb5#
      • 2.cxd6#
    • 1...Qf6
      • 2.Qb5#
    • 1...Qg6
      • 2.Qb5#
    • 1...Qh6
      • 2.Qb5#
    • 1...Qe7
      • 2.Qa6#
      • 2.Qb5#
    • 1...Qe8
      • 2.Qa6#
      • 2.Qb5#
    • 1...Rd1
      • 2.Rxc2#
    • 1...Rd4
      • 2.Rxc2#
    • 1...Rxd5
      • 2.Rxc2#
    • 1...a3
      • 2.Qb3#
  • Tries
    • 1.Bxe6?
      • threat
        • 2.Qa6#
        • 2.Qb5#
      • 1...Rxd5
        • 2.Rxc2#
      • 1...dxe6!
    • 1.Qb4+?
      • 1...Kxd5
        • 2.e4#
      • 1...axb4!
  • Keys
    • 1.c6!
      • threat
        • 2.Qb5#
      • 1...Kc5
        • 2.Qb5#
      • 1...Kxd5
        • 2.cxd7#
      • 1...Qxd5
        • 2.cxd7#
      • 1...Rxd5
        • 2.Rxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(f);CHECK,N_GUARD::QAB(H),XQ(f)
    • Q(f);CHECK,OGATE::R(I)+P(D),XQ(f)
    • Q(f);::QAB1(H)
    • R(b);N_GUARD::R(A),XP(a)
    • R(b);N_GUARD,XS(E)::R(A),XP(a)
    • P(c);N_GUARD::QAB1(H)
  • Tries
    • Try
      • B(J);XQ(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_GUARD,P_SPINR(b),XS(E)::R(A),XP(a)
      • Refutation
        • P(g);XB(J)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);P_SPINQ(f),S_FLIGHT,XS(E)::P(B)
      • Refutation
        • P(e);XQ(H)
  • Actual
    • P(D);
    • Threat
      • QAB1(H)
    • Vars
      • K(d);P-FLIGHT::QAR1(H)
      • K(d);P_SPINQ(f),S_FLIGHT,XS(E)::QAB(H)+P(D),XP(g)
      • Q(f);N_GUARD,P_SPINQ(f),XS(E)::R(I)+P(D),XP(g)
      • R(b);N_GUARD,SBLOCK,XS(E)::R(A),XP(a)
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