MESON Chess Problem Database

Problem Display
PID: 219425 (K5b1/6N1/2N2ppB/1Rp3n1/4k1pn/b4rP1/B1pQ2P1/8 w - - 0 1)

Groth, Reinhard

Konig, Wilfried

Freie Presse, 1979

K5b1/6N1/2N2ppB/1Rp3n1/4k1pn/b4rP1/B1pQ2P1/8

#2

9 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qe2#
    • 1...Rd3
      • 2.Qf4#
    • 1...Rf4
      • 2.Qe2#
    • 1...Rf5
      • 2.Qe2#
    • 1...Bd5
      • 2.Bxd5#
    • 1...Bh7
      • 2.Bd5#
    • 1...Se6
      • 2.Bd5#
      • 2.Qd5#
    • 1...Sf7
      • 2.Bd5#
      • 2.Qd5#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Rb4+?
      • 1...Bc4
        • 2.Rxc4#
      • 1...cxb4
        • 2.Qd4#
      • 1...c4
        • 2.Qd4#
      • 1...Bxb4!
  • Keys
    • 1.Se8!
      • threat
        • 2.Sd6#
      • 1...Kf5
        • 2.Sd6#
      • 1...Rd3
        • 2.Qf4#
      • 1...Sf5
        • 2.Sxf6#
      • 1...Sf7
        • 2.Qd5#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::QAR2(B)
    • R(c);N_GUARD,SBLOCK::QAR1(B)
    • B(k);N_GUARD,P_PINS(F)::B(A),XB(k)
    • B(k);N_GUARD::B(A)
    • P(g);N_GUARD::QAR1(B)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(k);N_GUARD,P_SPINB(k)::R(E),XB(k)
        • P(g);N_GUARD,XR(E)::QAR1(B)
        • P(g);N_GUARD,P_SPINP(g)::QAR1(B)
      • Refutation
        • B(b);XR(E)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(d);P_SPINP(g),S_FLIGHT::S(H)
      • R(c);N_GUARD,SBLOCK::QAR1(B)
      • S(f);SBLOCK,S_CUTR(c)::S(H),XP(i)
      • S(h);S_CUTB(k)::QAB1(B)
      • P(g);N_GUARD::QAR1(B)
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