MESON Chess Problem Database

Problem Display
PID: 196782 (1q4NN/pr1p3r/8/2R1Pk2/KpB3p1/b3B2b/4P3/2n4Q w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

5th HM., Otto Fuss Ty., 1919

1q4NN/pr1p3r/8/2R1Pk2/KpB3p1/b3B2b/4P3/2n4Q

#2

9 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.exd6#
    • 1...Rh4
      • 2.Se7#
    • 1...Rh5
      • 2.Se7#
    • 1...Rh6
      • 2.Sxh6#
      • 2.Se7#
    • 1...Re7
      • 2.Sh6#
      • 2.Sxe7#
    • 1...Rf7
      • 2.Sh6#
    • 1...Rg7
      • 2.Sh6#
    • 1...Rxh8
      • 2.Se7#
    • 1...Bf1
      • 2.Qxh7#
    • 1...Bg2
      • 2.Qxh7#
    • 1...Sa2
      • 2.Qb1#
    • 1...Sxe2
      • 2.Qb1#
    • 1...Sb3
      • 2.Qb1#
    • 1...g3
      • 2.Qf3#
    • 1...d5
      • 2.exd5 ep#
    • 1...d6
      • 2.exd6#
  • Tries
    • 1.Bxc1?
      • threat
        • 2.e4#
      • 1...Rxh8
        • 2.Se7#
      • 1...Bg2
        • 2.Qxh7#
      • 1...g3
        • 2.Qf3#
      • 1...d5
        • 2.exd5 ep#
      • 1...Bxc1!
    • 1.Bd3+?
      • 1...Ke6
        • 2.Qd5#
      • 1...Sxd3!
    • 1.Qf1+?
      • 1...Ke4
        • 2.Qf4#
      • 1...Bxf1!
  • Keys
    • 1.Bd2!
      • threat
        • 2.e4#
      • 1...Rxh8
        • 2.Se7#
      • 1...Sxe2
        • 2.Qb1#
      • 1...Bg2
        • 2.Qxh7#
      • 1...g3
        • 2.Qf3#
      • 1...d5
        • 2.exd5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(k);OGATE::R(F)+P(G),XQ(k)
    • R(j);N_GUARD::S(H)
    • R(j);N_GUARD,XS(I)::S(H)
    • B(c);OGATE::QAB(A),XR(j)
    • S(a);OGATE::QAB(A)
    • S(a);OGATE,XP(B)::QAB(A)
    • P(e);N_GUARD::QAR2(A)
    • P(i);OGATE::R(F)+P(G),XP(i),EP
    • P(i);OGATE::R(F)+P(G),XP(i)
  • Tries
    • Try
      • B(C);XS(a)
      • Threat
        • P(B)
      • Vars
        • R(j);N_GUARD,XS(I)::S(H)
        • B(c);OGATE::QAB(A),XR(j)
        • P(e);N_GUARD::QAR2(A)
        • P(i);OGATE::R(F)+P(G),XP(i),EP
      • Refutation
        • B(b);XB(C)
    • Try
      • B(E);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB1(A)
      • Refutation
        • S(a);XB(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(f);S_FLIGHT::QAR1(A)
      • Refutation
        • B(c);XQ(A)
  • Actual
    • B(C);
    • Threat
      • P(B)
    • Vars
      • R(j);N_GUARD,XS(I)::S(H)
      • S(a);OGATE,XP(B)::QAB(A)
      • B(c);OGATE::QAB(A),XR(j)
      • P(e);N_GUARD::QAR2(A)
      • P(i);OGATE::R(F)+P(G),XP(i),EP
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