MESON Chess Problem Database

Problem Display
PID: 240240 (b1B5/2B1pp1n/1Rq2k1P/1Q5P/Kp6/3N4/2pp4/5nr1 w - - 0 1)

Ellerman, Arnoldo

Tijdschrift vd KNSB, 1932

b1B5/2B1pp1n/1Rq2k1P/1Q5P/Kp6/3N4/2pp4/5nr1

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb6
      • 2.Qe5#
      • 2.Qf5#
    • 1...Qd6
      • 2.Qe5#
      • 2.Qf5#
    • 1...Qe6
      • 2.Qe5#
    • 1...Sg5
      • 2.Be5#
    • 1...e5
      • 2.Bd8#
    • 1...e6
      • 2.Bd8#
  • Tries
    • 1.Rxc6+?
      • 1...e6
        • 2.Bd8#
      • 1...Bxc6!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Se4#
      • 1...Qxb6
        • 2.Qe5#
        • 2.Qf5#
      • 1...e5
        • 2.Bd8#
      • 1...e6
        • 2.Bd8#
      • 1...Qd6
        • 2.Qf5#
      • 1...Qe6
        • 2.Qe5#
      • 1...Rg4
        • 2.Sxg4#
      • 1...Sg3
        • 2.Sg4#
      • 1...Sg5
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(f);N_PINQ(C)::QAB1(C)
    • S(j);SBLOCK::B(G)
    • P(h);OGATEB::B(G)
    • P(h);N_SPINQ(f),OGATEB::B(G)
  • Tries
    • Try
      • R(E);CHECK,N_SPINQ(C),XQ(f)
      • Vars
        • P(h);P_SPINP(h),S_CUTB(k)::B(G)
      • Refutation
        • B(k);P_PINQ(C),XR(E)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • P(h);OGATEB::B(G)
      • P(h);N_SPINQ(f),OGATEB::B(G)
      • Q(f);N_PINQ(C)::QAR1(C)
      • Q(f);N_PINQ(C)::QAB1(C)
      • R(b);N_GUARD::S(A),XR(b)
      • S(a);S_CUTR(b)::S(A)
      • S(j);SBLOCK::B(G)
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