MESON Chess Problem Database

Problem Display
PID: 229935 (Q7/8/3n4/b7/8/8/N1K5/k7 w - - 0 1)

Orlik, Peter

Deutsche Schachzeitung, 1982

Q7/8/3n4/b7/8/8/N1K5/k7

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa2
      • 2.Qxa5#
    • 1...Be1
      • 2.Sc3#
      • 2.Sb4#
    • 1...Bd2
      • 2.Sc3#
      • 2.Sb4#
    • 1...Bc3
      • 2.Sxc3#
      • 2.Sb4#
    • 1...Bb4
      • 2.Sxb4#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qh1#
        • 2.Qxa5#
      • 1...Sc4
        • 2.Qh1#
      • 1...Se4
        • 2.Qxa5#
      • 1...Sb5
        • 2.Qh1#
      • 1...Sb7!
    • 1.Qh8+?
      • 1...Kxa2
        • 2.Qb2#
      • 1...Bc3!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qh1#
        • 2.Qxa5#
        • 2.Qh8#
      • 1...Sc4
        • 2.Qh1#
      • 1...Se4
        • 2.Qxa5#
      • 1...Sb5
        • 2.Qh1#
      • 1...Sf5
        • 2.Qh1#
        • 2.Qxa5#
      • 1...Sb7
        • 2.Qh8#
      • 1...Sf7
        • 2.Qh1#
        • 2.Qxa5#
      • 1...Sc8
        • 2.Qh1#
        • 2.Qxa5#
      • 1...Se8
        • 2.Qh1#
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(a);OGATEB,P-FLIGHT,P_SPINB(b),XS(A)::QAR(C),XB(b)
    • B(b);::QAR(C)+S(A),XB(b)
  • Tries
    • Try
      • S(A);P_PINB(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(C)
        • S(c);::QAR(C),XB(b)
      • Refutation
        • S(c);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(A)::QAR1(C)
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • S(A);P_PINB(b)
    • Threat
      • DUALS(3)
    • Vars
      • S(c);::QAB1(C)
      • S(c);::QAR(C),XB(b)
      • S(c);::QAB(C)
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