MESON Chess Problem Database

Problem Display
PID: 269959 (5Nn1/2p2r2/N3Rp1p/3k4/1p1rn2Q/4P1p1/4B1K1/qbR1b3 w - - 0 1)

Chicco, Adriano

L'Italia Scacchistica, 1937

5Nn1/2p2r2/N3Rp1p/3k4/1p1rn2Q/4P1p1/4B1K1/qbR1b3

#2

8 + 13

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Bc4#
    • 1...Rd2
      • 2.Sxb4#
    • 1...Rd3
      • 2.Qxe4#
    • 1...Rc4
      • 2.Bxc4#
    • 1...Rxf8
      • 2.Sxc7#
    • 1...Sd2
      • 2.Rc5#
    • 1...Sf2
      • 2.Rc5#
    • 1...Sc3
      • 2.Qxd4#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Sg5
      • 2.Rc5#
    • 1...Sd6
      • 2.Rc5#
    • 1...Se7
      • 2.Sxc7#
  • Tries
    • 1.Qxe4+?
      • 1...Rxe4
        • 2.Rc5#
      • 1...Bxe4+!
    • 1.Qg4?
      • threat
        • 2.Qf5#
      • 1...Rd1
        • 2.Bc4#
      • 1...Rd2
        • 2.Sxb4#
      • 1...Rd3
        • 2.Qxe4#
      • 1...Rc4
        • 2.Bxc4#
      • 1...Sd2
        • 2.Rc5#
      • 1...Sf2
        • 2.Rc5#
      • 1...Sc3
        • 2.Qxd4#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sg5
        • 2.Rc5#
      • 1...Sd6
        • 2.Rc5#
      • 1...Se7
        • 2.Sxc7#
      • 1...f5!
    • 1.Qh5+?
      • 1...Sg5
        • 2.Rc5#
      • 1...f5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qf5#
      • 1...Rd1
        • 2.Bc4#
      • 1...Rd2
        • 2.Sxb4#
      • 1...Rd3
        • 2.Qxe4#
      • 1...Rc4
        • 2.Bxc4#
      • 1...Sd2
        • 2.Rc5#
      • 1...Sf2
        • 2.Rc5#
      • 1...Sc3
        • 2.Qxd4#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sg5
        • 2.Rc5#
      • 1...Sd6
        • 2.Rc5#
      • 1...Se7
        • 2.Sxc7#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::B(B)
    • R(f);N_GUARD,P_PINB(B),S_CUTB(c)::S(F),XP(e)
    • R(f);N_GUARD,S_CUTB(b)::QAB1(E),XS(g)
    • R(f);N_GUARD::B(B),XR(f)
    • R(l);N_GUARD,XS(H)::S(F),XP(k)
    • S(g);N_GUARD::R1(A)
    • S(g);OGATE::QAR1(E),XR(f)
    • S(g);N_GUARD::R1(A),XS(g)
    • S(m);S_CUTR(l)::S(F),XP(k)
  • Tries
    • Try
      • Q(E);CHECK,XS(g)
      • Vars
        • R(f);XQ(E)::R1(A)
      • Refutation
        • B(b);CHECK,XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • R(f);N_GUARD::B(B)
        • R(f);N_GUARD,P_PINB(B),S_CUTB(c)::S(F),XP(e)
        • R(f);N_GUARD,S_CUTB(b)::QAB1(E),XS(g)
        • R(f);N_GUARD::B(B),XR(f)
        • S(g);N_GUARD::R1(A)
        • S(g);OGATE::QAR1(E),XR(f)
        • S(g);N_GUARD::R1(A),XS(g)
        • S(m);S_CUTR(l)::S(F),XP(k)
      • Refutation
        • P(i);
    • Try
      • Q(E);CHECK
      • Vars
        • S(g);P_SPINS(g)::R1(A)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • R(f);N_GUARD::B(B)
      • R(f);N_GUARD,P_PINB(B),S_CUTB(c)::S(F),XP(e)
      • R(f);N_GUARD,S_CUTB(b)::QAB1(E),XS(g)
      • R(f);N_GUARD::B(B),XR(f)
      • S(g);N_GUARD::R1(A)
      • S(g);OGATE::QAR1(E),XR(f)
      • S(g);N_GUARD::R1(A),XS(g)
      • S(m);S_CUTR(l)::S(F),XP(k)
      • P(i);N_GUARD::QAR1(E)
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