MESON Chess Problem Database

Problem Display
PID: 50082 (b7/b3N3/Q1ppp3/P1p1kpP1/5p1n/3R4/3N4/7K w - - 0 1)

Handloser, Ralf Chris

Schweizerische Schachzeitung, 2003

b7/b3N3/Q1ppp3/P1p1kpP1/5p1n/3R4/3N4/7K

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Sg6#
    • 1...Sf3
      • 2.Sg6#
    • 1...Sg6
      • 2.Sxg6#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Qc4#
      • 1...Sxf3!
    • 1.Re3+?
      • 1...Kd4
        • 2.Qd3#
      • 1...fxe3!
    • 1.Qc4?
      • threat
        • 2.Qc3#
      • 1...Sf3
        • 2.Sxf3#
        • 2.Sg6#
      • 1...f3
        • 2.Re3#
      • 1...d5!
    • 1.Qc8?
      • threat
        • 2.Qh8#
      • 1...d5
        • 2.Qc7#
      • 1...Sg6
        • 2.Sxg6#
      • 1...f3!
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Sc4#
      • 1...Bxc6+
        • 2.Sxc6#
      • 1...f3
        • 2.Qxd6#
      • 1...c4
        • 2.Sxc4#
      • 1...d5
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::S(G)
    • S(b);N_GUARD::S(G),XS(b)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR2(F)
      • Refutation
        • S(b);XS(B)
    • Try
      • R(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(F)
      • Refutation
        • P(a);XR(C)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • P(a);N_GUARD::R(C)
      • Refutation
        • P(g);
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • P(g);OGATEB::QAB(F)
        • S(b);N_GUARD::S(G),XS(b)
      • Refutation
        • P(a);
  • Actual
    • Q(F);P_SPINQ(F),XP(f)
    • Threat
      • S(B)
    • Vars
      • B(j);CHECK,XQ(F)::S(G),XB(j)
      • P(a);N_PINQ(F)::QAB1(F),XP(g)
      • P(c);::S(B),XP(c)
      • P(g);N_PINQ(F)::QAB(F)
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