MESON Chess Problem Database

Problem Display
PID: 45321 (B3r1b1/pR4N1/3n4/r7/1Ppk1P1B/1P2p3/2R1K3/7Q w - - 0 1)

Retter, Yosef

Comm., Probleemblad, 1965

B3r1b1/pR4N1/3n4/r7/1Ppk1P1B/1P2p3/2R1K3/7Q

#2

10 + 8

3841 The Art of Israeli Chess Composition 1983
133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qd1#
    • 1...Sb5
      • 2.Sf5#
    • 1...Sf7
      • 2.Rxc4#
  • Tries
    • 1.Rb5?
      • threat
        • 2.Qd1#
      • 1...Rxa8
        • 2.Bf6#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bh7
        • 2.Qd5#
      • 1...Se4
        • 2.Sf5#
      • 1...Sb7
        • 2.Sf5#
      • 1...Ra1!
    • 1.Rf7?
      • threat
        • 2.Qd1#
      • 1...Rxa8
        • 2.Se6#
      • 1...Ra1
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Se4
        • 2.Rxc4#
      • 1...Sb7
        • 2.Rxc4#
      • 1...Bh7!
  • Keys
    • 1.Re7!
      • threat
        • 2.Qd1#
      • 1...Ra1
        • 2.Bf6#
      • 1...Bh7
        • 2.Se6#
      • 1...Se4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(g);SBLOCK::QAR(A)
    • S(e);N_GUARD,S_CUTR(d)::S(I)
    • S(e);N_GUARD,S_CUTB(h)::R1(B),XP(b)
  • Tries
    • Try
      • R(H);
      • Threat
        • QAR(A)
      • Vars
        • R(g);N_GUARD,XB(J)::B(G)
        • B(h);N_GUARD::QAR1(A),XB(h)
        • B(h);N_GUARD::QAR1(A)
        • S(e);N_GUARD::S(I)
      • Refutation
        • R(d);
    • Try
      • R(H);
      • Threat
        • QAR(A)
      • Vars
        • R(g);N_GUARD,XB(J)::S(I)
        • R(d);N_GUARD::QAR1(A)
        • R(d);N_GUARD::QAR1(A),XR(d)
        • S(e);N_GUARD::R1(B),XP(b)
      • Refutation
        • B(h);
  • Actual
    • R(H);
    • Threat
      • QAR(A)
    • Vars
      • R(d);N_GUARD::B(G)
      • B(h);N_GUARD::S(I)
      • S(e);N_GUARD::QAR1(A),XS(e)
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