MESON Chess Problem Database

Problem Display
PID: 261132 (8/8/p2p4/Rn4nR/1N1kp1K1/P2P4/B7/4Q3 w - - 0 1)

Mirri, Giorgio

5th HM., Neue Zurcher Zeitung, 1983

8/8/p2p4/Rn4nR/1N1kp1K1/P2P4/B7/4Q3

#2

8 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qe3#
    • 1...Ke5
      • 2.Qc3#
      • 2.Qa1#
    • 1...Sxa3
      • 2.Rd5#
    • 1...Sa7
      • 2.Rd5#
    • 1...Sf3
      • 2.Rd5#
    • 1...Sh3
      • 2.Rd5#
    • 1...Se6
      • 2.Rd5#
    • 1...Sf7
      • 2.Rd5#
    • 1...Sh7
      • 2.Rd5#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Rd5#
      • 1...d5
        • 2.Rxd5#
      • 1...axb5!
  • Keys
    • 1.Sd5!
      • 1...Kxd3
        • 2.Qd1#
      • 1...Kc5
        • 2.Qc3#
      • 1...Ke5
        • 2.Qxe4#
      • 1...Sxa3
        • 2.Qc3#
      • 1...exd3
        • 2.Qe3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sa7
        • 2.Qc3#
      • 1...Sc7
        • 2.Qc3#
      • 1...Sf3
        • 2.Qe3#
      • 1...Sh3
        • 2.Qe3#
      • 1...Se6
        • 2.Qe3#
      • 1...Sf7
        • 2.Qe3#
      • 1...Sh7
        • 2.Qe3#
      • 1...e3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 8
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,P_SPINS(c),S_FLIGHT::QAB(A)
    • S(c);OGATE,XP(C)::R1(G)
    • S(c);OGATE::R1(G)
    • S(d);OGATE::R1(H)
  • Tries
    • Try
      • R(G);XS(c)
      • Threat
        • R1(G)
      • Vars
        • P(f);::R1(G),XP(f)
      • Refutation
        • P(e);XR(G)
  • Actual
    • S(E);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
      • K(a);P_SPINS(c),S_FLIGHT::QAR2(A)
      • K(a);N_GUARD,P_SPINP(b),P_SPINS(d),S_FLIGHT::QAR1(A),XP(b)
      • S(c);N_GUARD,XP(C)::QAB1(A)
      • P(b);XP(D)::QAB1(A)
      • S(c);N_GUARD::QAB1(A),XS(c)
      • S(c);N_GUARD::QAB1(A)
      • S(d);::QAB1(A)
      • P(b);::QAB1(A),XP(b)
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