MESON Chess Problem Database

Problem Display
PID: 222547 (bb2n1K1/2nrp1P1/4N2R/r4kPR/6p1/3p2B1/B2N4/7Q w - - 0 1)

Luukkonen, Emil

Suomen Shakki, 1944

bb2n1K1/2nrp1P1/4N2R/r4kPR/6p1/3p2B1/B2N4/7Q

#2

10 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rad5
      • 2.Qe4#
      • 2.Qf1#
    • 1...Rd4
      • 2.Sxd4#
    • 1...Rdd5
      • 2.Qe4#
      • 2.Qf1#
    • 1...Be4
      • 2.Qxe4#
    • 1...Sd5
      • 2.Sd4#
      • 2.Qe4#
    • 1...Sxe6
      • 2.Bxe6#
    • 1...Sd6
      • 2.Sd4#
    • 1...Sf6+
      • 2.gxf6#
    • 1...Sxg7
      • 2.Sxg7#
  • Tries
    • 1.Kf7?
      • threat
        • 2.g6#
      • 1...Sxe6
        • 2.Bxe6#
      • 1...Sxg7
        • 2.Sxg7#
      • 1...Sf6
        • 2.gxf6#
      • 1...Sd6+!
  • Keys
    • 1.Qa1!
      • threat
        • 2.g6#
      • 1...Sf6+
        • 2.gxf6#
      • 1...Rxa2
        • 2.Qe5#
      • 1...Sxe6
        • 2.Bxe6#
      • 1...Sxg7
        • 2.Sxg7#
      • 1...Rad5
        • 2.Qf1#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rd4
        • 2.Sxd4#
      • 1...Rdd5
        • 2.Qf1#
      • 1...Bd5
        • 2.Qe5#
      • 1...Sd5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(f);N_GUARD::S(G),XR(f)
    • B(h);N_GUARD::QAB1(A),XB(h)
    • S(e);OGATE,XS(G)::B(B),XS(e)
    • S(j);S_CUTR(f)::S(G)
    • S(j);CHECK,OGATE::R(F)+P(E),XS(j)
    • S(j);XP(I)::S(G),XS(j)
  • Tries
    • Try
      • K(J);S_FLIGHT
      • Threat
        • R(F)+P(E)
      • Vars
        • S(e);OGATE,XS(G)::B(B),XS(e)
        • S(j);XP(I)::S(G),XS(j)
        • S(j);OGATE::R(F)+P(E),XS(j)
      • Refutation
        • S(j);CHECK
  • Actual
    • Q(A);
    • Threat
      • R(F)+P(E)
    • Vars
      • S(j);CHECK,OGATE::R(F)+P(E),XS(j)
      • R(c);N_GUARD,XB(B)::QAR1(A)
      • S(e);OGATE,XS(G)::B(B),XS(e)
      • S(j);XP(I)::S(G),XS(j)
      • R(c);S_CUTB(h)::QAR(A)
      • R(c);N_GUARD::QAR1(A),XR(c)
      • R(f);N_GUARD::S(G),XR(f)
      • R(f);S_CUTB(h)::QAR(A)
      • B(h);P_PINS(G),S_CUTR(c)::QAR1(A)
      • S(e);S_CUTR(f)::S(G)
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