MESON Chess Problem Database

Problem Display
PID: 194881 (B7/3K4/1N1p3B/5p2/Q2P1P2/1P2kNbR/1nP3Rp/3rr3 w - - 0 1)

Belli, Nicolo

4th HM., L'Italia Scacchistica, 1918

B7/3K4/1N1p3B/5p2/Q2P1P2/1P2kNbR/1nP3Rp/3rr3

#2

12 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Qxd4#
    • 1...Bxf4
      • 2.Sxe1#
      • 2.Sg1#
      • 2.Sd2#
      • 2.Sxh2#
      • 2.Sh4#
      • 2.Se5#
    • 1...Bh4
      • 2.Sxh4#
    • 1...Sd3
      • 2.Sc4#
    • 1...Sxa4
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qe8#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Sxa4
        • 2.Sc4#
      • 1...Bh4
        • 2.Sxh4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...d5!
    • 1.Kc8?
      • threat
        • 2.Qe8#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Sxa4
        • 2.Sc4#
      • 1...Bh4
        • 2.Sxh4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...d5!
    • 1.Kd8?
      • threat
        • 2.Qe8#
      • 1...Bh4+
        • 2.Sxh4#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Sxa4
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...d5!
    • 1.Sd5+?
      • 1...Ke4
        • 2.Sg5#
      • 1...Kxf3!
  • Keys
    • 1.Kxd6!
      • threat
        • 2.Qe8#
      • 1...Rxd4+
        • 2.Qxd4#
      • 1...Bxf4+
        • 2.Se5#
      • 1...Sc4+
        • 2.Sxc4#
      • 1...Sxa4
        • 2.Sc4#
      • 1...Bh4
        • 2.Sxh4#
      • 1...Sd3
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,XP(G)::QAB1(F),XR(a)
    • B(f);::R(E)+S(D),XB(f)
    • S(c);N_GUARD::S(I)
    • S(c);N_GUARD,XQ(F)::S(I)
    • S(c);N_GUARD::S(I),XS(c)
  • Tries
    • Try
      • K(K);P-FLIGHT
      • Threat
        • QAR(F)
      • Vars
        • R(a);OGATE,XP(G)::QAB1(F),XR(a)
        • S(c);N_GUARD,XQ(F)::S(I)
        • B(f);::R(E)+S(D),XB(f)
        • S(c);N_GUARD::S(I)
        • S(c);N_GUARD::S(I),XS(c)
      • Refutation
        • P(h);P_PINP(H)
    • Try
      • K(K);S_FLIGHT
      • Threat
        • QAR(F)
      • Vars
        • R(a);OGATE,XP(G)::QAB1(F),XR(a)
        • S(c);N_GUARD,XQ(F)::S(I)
        • B(f);::R(E)+S(D),XB(f)
        • S(c);N_GUARD::S(I)
        • S(c);N_GUARD::S(I),XS(c)
      • Refutation
        • P(h);
    • Try
      • K(K);P-FLIGHT
      • Threat
        • QAR(F)
      • Vars
        • B(f);CHECK::R(E)+S(D),XB(f)
        • R(a);OGATE,XP(G)::QAB1(F),XR(a)
        • S(c);N_GUARD,XQ(F)::S(I)
        • S(c);N_GUARD::S(I)
        • S(c);N_GUARD::S(I),XS(c)
      • Refutation
        • P(h);
    • Try
      • S(I);CHECK
      • Vars
        • K(e);P-FLIGHT::S(D)
      • Refutation
        • K(e);P-FLIGHT,P_SPINB(f),XS(D)
  • Actual
    • K(K);P-FLIGHT,P_SPINP(G),XP(h)
    • Threat
      • QAR(F)
    • Vars
      • R(a);CHECK,OGATE,P_PINP(H),XP(G)::QAB1(F),XR(a)
      • B(f);CHECK,P_SPINB(f),XP(H)::R(E)+S(D)
      • S(c);CHECK,N_GUARD::S(I),XS(c)
      • S(c);N_GUARD,XQ(F)::S(I)
      • B(f);::R(E)+S(D),XB(f)
      • S(c);N_GUARD,N_PINP(G),P_PINP(H)::S(I)
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