MESON Chess Problem Database

Problem Display
PID: 240267 (r4q2/8/Qb6/1nR1p2P/R4p1N/5B2/2pN3p/3nK1kr w - - 0 1)

Heyl, Peter

Problem-Forum, 2007

r4q2/8/Qb6/1nR1p2P/R4p1N/5B2/2pN3p/3nK1kr

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba5
      • 2.Qg6#
    • 1...Bxc5
      • 2.Qg6#
    • 1...Ba7
      • 2.Qg6#
    • 1...Bc7
      • 2.Qg6#
    • 1...Sa3
      • 2.Qf1#
    • 1...Sc3
      • 2.Qf1#
    • 1...Sd4
      • 2.Qf1#
    • 1...Sd6
      • 2.Qf1#
    • 1...Sa7
      • 2.Qf1#
    • 1...Sc7
      • 2.Qf1#
    • 1...e4
      • 2.Rg5#
  • Tries
    • 1.Be2?
      • threat
        • 2.Sdf3#
      • 1...Ba5
        • 2.Qg6#
      • 1...f3
        • 2.Rg4#
      • 1...e4
        • 2.Rg5#
      • 1...Sd4!
    • 1.Be4?
      • threat
        • 2.Sdf3#
      • 1...Ba5
        • 2.Qg6#
      • 1...Sd4
        • 2.Qf1#
      • 1...f3!
    • 1.Bd5?
      • threat
        • 2.Sdf3#
      • 1...f3
        • 2.Rg4#
      • 1...Ba5
        • 2.Qg6#
      • 1...Sd4
        • 2.Qf1#
      • 1...e4!
    • 1.Bc6?
      • threat
        • 2.Sdf3#
      • 1...f3
        • 2.Rg4#
      • 1...Sd4
        • 2.Qf1#
      • 1...e4
        • 2.Rg5#
      • 1...Ba5!
    • 1.Bxa8?
      • threat
        • 2.Sdf3#
      • 1...Ba5
        • 2.Qg6#
      • 1...Sd4
        • 2.Qf1#
      • 1...f3
        • 2.Rg4#
      • 1...e4
        • 2.Rg5#
      • 1...Qxa8!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Sdf3#
      • 1...Ba5
        • 2.Qg6#
      • 1...Sd4
        • 2.Qf1#
      • 1...f3
        • 2.Rg4#
      • 1...e4
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • B(i);OGATE,P_PINS(B)::QAR(H)
    • B(i);OGATE,XR(F)::QAR(H)
    • B(i);OGATE::QAR(H)
    • S(g);OGATE::QAR1(H)
    • P(h);OGATE::R(F)
  • Tries
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • B(i);OGATE,P_PINS(B)::QAR(H)
        • P(f);OGATE::R(D)
        • P(h);OGATE::R(F)
      • Refutation
        • S(g);
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • B(i);OGATE,P_PINS(B)::QAR(H)
        • S(g);OGATE::QAR1(H)
      • Refutation
        • P(f);
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • P(f);OGATE::R(D)
        • B(i);OGATE,P_PINS(B)::QAR(H)
        • S(g);OGATE::QAR1(H)
      • Refutation
        • P(h);
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • P(f);OGATE::R(D)
        • S(g);OGATE::QAR1(H)
        • P(h);OGATE::R(F)
      • Refutation
        • B(i);P_PINS(B)
    • Try
      • B(C);XR(j)
      • Threat
        • S(B)
      • Vars
        • B(i);OGATE,P_PINS(B)::QAR(H)
        • S(g);OGATE::QAR1(H)
        • P(f);OGATE::R(D)
        • P(h);OGATE::R(F)
      • Refutation
        • Q(k);XB(C)
  • Actual
    • B(C);
    • Threat
      • S(B)
    • Vars
      • B(i);OGATE,P_PINS(B)::QAR(H)
      • S(g);OGATE::QAR1(H)
      • P(f);OGATE::R(D)
      • P(h);OGATE::R(F)
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