MESON Chess Problem Database

Problem Display
PID: 241196 (N6R/k3p3/7K/3B2B1/1N1q4/3p1n2/8/6Q1 w - - 0 1)

Heyl, Peter

Sachsische Zeitung, 2013

N6R/k3p3/7K/3B2B1/1N1q4/3p1n2/8/6Q1

#2

7 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Qa1#
    • 1...Qc5
      • 2.Qxc5#
    • 1...Qb6+
      • 2.Qxb6#
    • 1...Se1
      • 2.Qxd4#
    • 1...Sd2
      • 2.Qxd4#
    • 1...Sh2
      • 2.Qxd4#
    • 1...Sh4
      • 2.Qxd4#
    • 1...Se5
      • 2.Qxd4#
    • 1...Sxg5
      • 2.Qxd4#
  • Tries
    • 1.Be3?
      • threat
        • 2.Qa1#
      • 1...Qb6+
        • 2.Bxb6#
      • 1...Sxg1
        • 2.Bxd4#
      • 1...Se1
        • 2.Bxd4#
      • 1...Qxe3+!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Bb8#
      • 1...Qb6+
        • 2.Qxb6#
      • 1...Qe3
        • 2.Qa1#
      • 1...Se5
        • 2.Qxd4#
      • 1...e5
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(c);N_GUARD,P_PINB(D)::QAR(A)
    • Q(c);OGATE::QAB(A),XQ(c)
    • Q(c);CHECK,OGATE::QAB1(A),XQ(c)
    • S(b);N_GUARD::QAB(A),XQ(c)
    • S(b);N_GUARD,XB(D)::QAB(A),XQ(c)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR(A)
      • Vars
        • Q(c);CHECK,OGATE::B(D),XQ(c)
        • S(b);N_GUARD,XQ(A)::B(D),XQ(c)
        • S(b);N_GUARD::B(D),XQ(c)
      • Refutation
        • Q(c);CHECK,XB(D)
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • Q(c);CHECK,OGATE::QAB1(A),XQ(c)
      • Q(c);N_GUARD,P_PINB(D)::QAR(A)
      • S(b);N_GUARD::QAB(A),XQ(c)
      • P(e);OGATEB::QAR(A)
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