MESON Chess Problem Database

Problem Display
PID: 261204 (3n3Q/3p1pNR/N4r1r/1PBk2n1/5Pb1/1K2P3/2B5/2R5 w - - 0 1)

Piatesi, Antonio

Neue Zurcher Zeitung, 1979

3n3Q/3p1pNR/N4r1r/1PBk2n1/5Pb1/1K2P3/2B5/2R5

#2

11 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Rxd1#
    • 1...Bh3
      • 2.Rd1#
    • 1...Be6
      • 2.Rd1#
    • 1...Sf3
      • 2.e4#
    • 1...Sh3
      • 2.e4#
    • 1...Sge6
      • 2.e4#
    • 1...Sxh7
      • 2.e4#
    • 1...Sde6
      • 2.Qa8#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sec7#
      • 1...Ke6
        • 2.Sac7#
        • 2.Sec7#
      • 1...Rxa6
        • 2.Qe5#
      • 1...Rc6
        • 2.Qe5#
      • 1...Sge6
        • 2.e4#
      • 1...Sde6!
    • 1.Be4+?
      • 1...Sxe4
        • 2.Sb4#
        • 2.Sc7#
      • 1...Kxe4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sac7#
        • 2.Sec7#
      • 1...Kxe6
        • 2.Sc7#
      • 1...Rxe6
        • 2.Qd4#
      • 1...Bxe6
        • 2.Rd1#
      • 1...Sgxe6
        • 2.e4#
      • 1...Sdxe6
        • 2.Qa8#
      • 1...dxe6
        • 2.Qxd8#
      • 1...fxe6
        • 2.Rxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(a);N_GUARD,P_PINB(B)::R(A),XB(a)
    • B(a);N_GUARD::R(A)
    • S(c);N_GUARD::P(D)
    • S(c);N_GUARD,XR(J)::P(D)
    • S(h);OGATE::QAB(K)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • R(d);OGATE,XS(H)::QAR1(K)
        • R(d);OGATE::QAR1(K)
        • S(c);N_GUARD,SBLOCK::P(D)
      • Refutation
        • S(h);
    • Try
      • B(B);CHECK
      • Refutation
        • K(b);S_FLIGHT,XB(B)
  • Actual
    • S(I);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT,XS(I)::S(H)
      • R(d);OGATE,SBLOCK,XS(I)::QAR1(K)
      • B(a);N_GUARD,SBLOCK,XS(I)::R(A)
      • S(c);N_GUARD,SBLOCK,XS(I)::P(D)
      • S(h);OGATE,SBLOCK,XS(I)::QAB(K)
      • P(f);OGATEB,SBLOCK,XS(I)::QAR(K),XS(h)
      • P(g);OGATE,SBLOCK,XS(I)::R(J),XP(f)
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