MESON Chess Problem Database

Problem Display
PID: 235206 (2n1R3/6p1/1p1P4/1NppP2R/3Nk1Kb/3p4/3Pp3/Q1n5 w - - 0 1)

Heyl, Peter

Schach, 1999

2n1R3/6p1/1p1P4/1NppP2R/3Nk1Kb/3p4/3Pp3/Q1n5

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qh1#
    • 1...Sb3
      • 2.Qh1#
    • 1...Sxd6
      • 2.Sxd6#
    • 1...cxd4
      • 2.Qxd4#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sc3#
      • 1...d4
        • 2.Qa8#
      • 1...Sa2
        • 2.Qh1#
      • 1...dxc2!
    • 1.Sxe2?
      • threat
        • 2.Sec3#
        • 2.Sbc3#
      • 1...Sxe2
        • 2.Qh1#
      • 1...d4
        • 2.Qa8#
      • 1...Sa2
        • 2.Qh1#
      • 1...dxe2!
    • 1.Sf3?
      • threat
        • 2.Sc3#
      • 1...d4
        • 2.Qa8#
      • 1...Sa2!
    • 1.Sf5?
      • threat
        • 2.Sc3#
      • 1...d4
        • 2.Qa8#
      • 1...Be7
        • 2.Sg3#
      • 1...Sa2
        • 2.Qh1#
      • 1...Se7!
    • 1.Sc6?
      • threat
        • 2.Sc3#
      • 1...Sa2
        • 2.Qh1#
      • 1...d4!
    • 1.Se6?
      • threat
        • 2.Sc3#
      • 1...d4
        • 2.Qa8#
      • 1...Bg5
        • 2.Sxg5#
      • 1...Sa2
        • 2.Qh1#
      • 1...g5!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sc3#
      • 1...Sxb3
        • 2.Qh1#
      • 1...d4
        • 2.Qa8#
      • 1...Sa2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(a);OGATE::QAB(A)
    • S(j);XP(H)::S(E),XS(j)
    • P(f);OGATE,XS(C)::QAR1(A),XP(f)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(E)
      • Vars
        • P(g);OGATEB::QAB(A)
        • S(a);OGATE::QAB(A)
      • Refutation
        • P(c);XS(C)
    • Try
      • S(C);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);OGATE,XS(C)::QAB(A)
        • P(g);OGATEB::QAB(A)
        • S(a);OGATE::QAB(A)
      • Refutation
        • P(c);XS(C)
    • Try
      • S(C);
      • Threat
        • S(E)
      • Vars
        • P(g);OGATEB::QAB(A)
      • Refutation
        • S(a);
    • Try
      • S(C);
      • Threat
        • S(E)
      • Vars
        • P(g);OGATEB::QAB(A)
        • B(e);N_GUARD::S(C)
        • S(a);OGATE::QAB(A)
      • Refutation
        • S(j);
    • Try
      • S(C);
      • Threat
        • S(E)
      • Vars
        • S(a);OGATE::QAB(A)
      • Refutation
        • P(g);
    • Try
      • S(C);
      • Threat
        • S(E)
      • Vars
        • P(g);OGATEB::QAB(A)
        • B(e);N_GUARD::S(C),XB(e)
        • S(a);OGATE::QAB(A)
      • Refutation
        • P(i);
  • Actual
    • S(C);
    • Threat
      • S(E)
    • Vars
      • S(a);OGATE,XS(C)::QAB(A)
      • P(g);OGATEB::QAB(A)
      • S(a);OGATE::QAB(A)
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