MESON Chess Problem Database

Problem Display
PID: 235261 (q7/7Q/2pN4/1Bp1N3/1p6/ppk1P3/1n4pR/K1B4b w - - 0 1)

Heyl, Peter

Schach, 2011

q7/7Q/2pN4/1Bp1N3/1p6/ppk1P3/1n4pR/K1B4b

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
    • 1...Sc4
      • 2.Qd3#
    • 1...g1S
      • 2.Bd2#
    • 1...g1B
      • 2.Bd2#
    • 1...cxb5
      • 2.Sxb5#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Bd2#
      • 1...Sd3
        • 2.Qxd3#
      • 1...g1Q
        • 2.Se4#
      • 1...g1R
        • 2.Se4#
      • 1...Sc4!
    • 1.Rxg2?
      • threat
        • 2.Se4#
        • 2.Bd2#
      • 1...cxb5
        • 2.Sxb5#
        • 2.Bd2#
      • 1...Sd3
        • 2.Se4#
        • 2.Qxd3#
      • 1...Sc4
        • 2.Se4#
        • 2.Qd3#
      • 1...Bxg2!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Se4#
      • 1...cxb5
        • 2.Sxb5#
      • 1...g1Q
        • 2.Bd2#
      • 1...g1S
        • 2.Bd2#
      • 1...g1B
        • 2.Bd2#
      • 1...g1R
        • 2.Bd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::QAR1(H)
    • S(b);N_GUARD::QAR1(H),XS(b)
    • P(c);::B(B)
    • P(i);XB(E)::S(G),XP(i)
  • Tries
    • Try
      • S(F);
      • Threat
        • B(B)
      • Vars
        • S(b);N_GUARD::QAR1(H),XS(b)
        • P(c);P_PINB(B)::S(G)
      • Refutation
        • S(b);
    • Try
      • R(C);XP(c)
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);XR(C)
  • Actual
    • Q(H);
    • Threat
      • S(G)
    • Vars
      • P(i);XB(E)::S(G),XP(i)
      • P(c);::B(B)
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