MESON Chess Problem Database

Problem Display
PID: 116344 (5R2/5q1B/3n1p2/2p1R3/1p3N1Q/1r3k1N/3p1Pb1/5nK1 w - - 0 1)

Hermanson, Halvar

Magyar Sakkelet, 1961

5R2/5q1B/3n1p2/2p1R3/1p3N1Q/1r3k1N/3p1Pb1/5nK1

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Qh5#
    • 1...Qd5
      • 2.Qh5#
    • 1...Qh5
      • 2.Qxh5#
    • 1...Qa7
      • 2.Qh5#
    • 1...Qb7
      • 2.Qh5#
    • 1...Qc7
      • 2.Qh5#
    • 1...Qe7
      • 2.Qh5#
    • 1...Qxf8
      • 2.Qh5#
    • 1...Sh2
      • 2.Qg3#
    • 1...Se3
      • 2.Qg3#
    • 1...Sg3
      • 2.Qxg3#
    • 1...Sc4
      • 2.Be4#
    • 1...Se4
      • 2.Bxe4#
    • 1...Sb5
      • 2.Be4#
    • 1...Sb7
      • 2.Be4#
    • 1...Sc8
      • 2.Be4#
    • 1...Se8
      • 2.Be4#
    • 1...fxe5
      • 2.Sg5#
    • 1...f5
      • 2.Sg5#
  • Tries
    • 1.Re3+?
      • 1...Sxe3
        • 2.Qg3#
      • 1...Rxe3!
    • 1.Rxf7?
      • threat
        • 2.Qh5#
      • 1...Sh2
        • 2.Qg3#
      • 1...Se3
        • 2.Qg3#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Bxh3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qf4#
      • 1...fxe5
        • 2.Qh5#
      • 1...Se3
        • 2.Rxe3#
      • 1...Se4
        • 2.Qxe4#
      • 1...Qc4
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 15
  • Sets
    • Q(j);N_GUARD::QAB(E)
    • Q(j);N_GUARD::QAB(E),XQ(j)
    • Q(j);N_GUARD,XR(H)::QAB(E)
    • S(a);N_GUARD::QAR1(E)
    • S(a);N_GUARD::QAR1(E),XS(a)
    • S(h);N_GUARD::B(G)
    • S(h);N_GUARD::B(G),XS(h)
    • P(i);N_GUARD,XR(F)::S(C)
    • P(i);N_GUARD::S(C)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • S(a);XR(F)::QAR1(E)
      • Refutation
        • R(d);XR(F)
    • Try
      • R(H);XQ(j)
      • Threat
        • QAB(E)
      • Vars
        • S(a);N_GUARD::QAR1(E)
        • S(a);N_GUARD::QAR1(E),XS(a)
      • Refutation
        • B(c);XS(C)
  • Actual
    • S(D);
    • Threat
      • QAR1(E)
    • Vars
      • P(i);P_SPINQ(j),XR(F)::QAB(E)
      • S(a);N_GUARD::R1(F),XS(a)
      • S(h);N_GUARD::QAB1(E),XS(h)
      • Q(j);P_SPINP(i)::S(C)
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