MESON Chess Problem Database

Problem Display
PID: 212645 (6nb/1n1B4/4P3/1N1k1p2/N2p1P2/1P3pP1/5P2/4Q2K w - - 0 1)

Muller, Dieter

Land og Folk, 1970

6nb/1n1B4/4P3/1N1k1p2/N2p1P2/1P3pP1/5P2/4Q2K

#2

10 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qxe5#
    • 1...Sc5
      • 2.Sb6#
    • 1...Sd6
      • 2.Sc7#
    • 1...Sf6
      • 2.Qe5#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qxf3#
      • 1...Sc5
        • 2.Sb6#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Qe5#
      • 1...fxe2!
    • 1.Qe3?
      • threat
        • 2.Qxf3#
      • 1...Sc5
        • 2.Sb6#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Qxd4#
        • 2.Qe5#
      • 1...dxe3!
    • 1.e7?
      • threat
        • 2.Qe6#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sc5
        • 2.Sb6#
      • 1...Sd8!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qxf3#
      • 1...Ke4
        • 2.Bc6#
      • 1...Sc5
        • 2.Sac3#
      • 1...Sd6
        • 2.Sbc3#
      • 1...Sf6
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::QAR1(A),XB(g)
    • S(e);SBLOCK::S(F)
    • S(e);SBLOCK::S(H)
    • S(f);S_CUTB(g)::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(a)
      • Vars
        • S(e);SBLOCK::S(F)
        • S(e);SBLOCK::S(H)
        • S(f);S_CUTB(g)::QAR1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(a)
      • Vars
        • S(e);SBLOCK::S(F)
        • S(e);SBLOCK::S(H)
      • Refutation
        • P(b);XQ(A)
    • Try
      • P(I);
      • Threat
        • QAB1(A)
      • Vars
        • B(g);N_GUARD::QAR1(A),XB(g)
        • S(e);SBLOCK::S(F)
      • Refutation
        • S(e);
  • Actual
    • Q(A);P_PINP(b)
    • Threat
      • QAB(A),XP(a)
    • Vars
      • K(c);N_SPINP(b),S_FLIGHT::B(J)
      • S(e);SBLOCK::S(F)
      • S(e);SBLOCK::S(H)
      • S(f);S_CUTB(g)::QAR1(A),XP(b)
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