MESON Chess Problem Database

Problem Display
PID: 227930 (K1Qn1r2/Np1bN3/4B3/nqp2p2/1p1k1B2/1P2R3/r1P1pR2/8 w - - 0 1)

Lange, Hans Franz

Deutsche Schachzeitung, 1944

K1Qn1r2/Np1bN3/4B3/nqp2p2/1p1k1B2/1P2R3/r1P1pR2/8

#2

10 + 12

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re8
      • 2.Sxf5#
    • 1...Rg8
      • 2.Sxf5#
    • 1...Rh8
      • 2.Sxf5#
    • 1...Bxe6
      • 2.Sxb5#
    • 1...Bxc8
      • 2.Sxb5#
    • 1...Sac6
      • 2.Qxd7#
    • 1...Sdc6
      • 2.Sxb5#
    • 1...Sf7
      • 2.Sxf5#
  • Tries
    • 1.Rd3+?
      • 1...Ke4
        • 2.Bd5#
      • 1...Qxd3!
  • Keys
    • 1.Rfxe2!
      • threat
        • 2.Be5#
      • 1...Qxe2
        • 2.Qxd7#
      • 1...Sc4
        • 2.Rd3#
      • 1...Sac6
        • 2.Qxd7#
      • 1...Sdc6
        • 2.Sxb5#
      • 1...Sf7
        • 2.Sxf5#
      • 1...c4
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(l);N_GUARD::S(H),XP(h)
    • B(j);N_GUARD,XB(F)::S(G),XQ(f)
    • B(j);N_GUARD,XQ(J)::S(G),XQ(f)
    • S(e);P_PINS(G),S_CUTQ(f)::QAR(J),XB(j)
    • S(k);P_PINQ(J),S_CUTB(j)::S(G),XQ(f)
    • S(k);P_PINQ(J),S_CUTR(l)::S(H),XP(h)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(d);P-FLIGHT::B(F)
      • Refutation
        • Q(f);XR(D)
  • Actual
    • R(B);XP(b)
    • Threat
      • B(E)
    • Vars
      • Q(f);N_GUARD,XR(B)::QAR(J),XB(j)
      • S(e);P_PINS(G),S_CUTQ(f)::R1(D)
      • S(e);P_PINS(G),S_CUTQ(f)::QAR(J),XB(j)
      • S(k);P_PINQ(J),S_CUTB(j)::S(G),XQ(f)
      • S(k);P_PINQ(J),S_CUTR(l)::S(H),XP(h)
      • P(g);S_CUTQ(f)::R(B)
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