MESON Chess Problem Database

Problem Display
PID: 121681 (B4b2/1rp2p2/2np4/R1rkp3/n2P2Q1/N1R2P2/N1P4K/B6b w - - 0 1)

Stocchi, Ottavio

Lo Scacchistica di Roma, 1935

B4b2/1rp2p2/2np4/R1rkp3/n2P2Q1/N1R2P2/N1P4K/B6b

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Sxb4#
    • 1...Ra7
      • 2.Sb4#
    • 1...Sxc3
      • 2.Sxc3#
    • 1...Sb4
      • 2.Sxb4#
    • 1...Sxd4
      • 2.Sb4#
    • 1...Sxa5
      • 2.Sb4#
    • 1...Sa7
      • 2.Sb4#
    • 1...Se7
      • 2.Sb4#
    • 1...Sb8
      • 2.Sb4#
    • 1...Sd8
      • 2.Sb4#
    • 1...exd4
      • 2.Qe4#
    • 1...e4
      • 2.Qxe4#
  • Tries
    • 1.Bxb7?
      • threat
        • 2.Sb4#
      • 1...exd4
        • 2.Qf5#
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...f5!
    • 1.Rb3?
      • threat
        • 2.c4#
      • 1...Sxd4
        • 2.Sb4#
      • 1...Sxa5
        • 2.Sb4#
      • 1...exd4
        • 2.Qe4#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Sa7
        • 2.Sb4#
      • 1...Se7
        • 2.Sb4#
      • 1...Sb8
        • 2.Sb4#
      • 1...Sd8
        • 2.Sb4#
      • 1...f5
        • 2.Qg8#
      • 1...Rb4
        • 2.Sxb4#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sb6
        • 2.Sc3#
      • 1...Rbb5!
    • 1.Rcxc5+?
      • 1...Sxc5
        • 2.Sc3#
        • 2.c4#
      • 1...dxc5!
  • Keys
    • 1.Rd3!
      • threat
        • 2.c4#
      • 1...Sxd4
        • 2.Sb4#
      • 1...Sxa5
        • 2.Sb4#
      • 1...exd4
        • 2.Qe4#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Sa7
        • 2.Sb4#
      • 1...Se7
        • 2.Sb4#
      • 1...Sb8
        • 2.Sb4#
      • 1...Sd8
        • 2.Sb4#
      • 1...f5
        • 2.Qg8#
      • 1...Rb2
        • 2.dxc5#
      • 1...Rb4
        • 2.Sxb4#
      • 1...Rbb5
        • 2.dxe5#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sb6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(h);N_GUARD,P_SPINS(f)::S(B),XR(h)
    • R(h);N_GUARD,P_SPINS(f)::S(B)
    • S(b);XR(F)::S(B),XS(b)
    • S(f);N_GUARD,S_CUTR(h)::S(B),XS(f)
    • S(f);N_GUARD,S_CUTR(h),XP(H)::S(B)
    • S(f);N_GUARD,N_SPINR(c),P_SPINR(h),XR(J)::S(B)
    • S(f);N_GUARD,S_CUTR(h)::S(B)
    • P(e);XP(H)::QAB1(I)
    • P(e);::QAB1(I),XP(e)
  • Tries
    • Try
      • B(K);P_PINS(f),XR(h)
      • Threat
        • S(B)
      • Vars
        • P(e);::QAB1(I),XP(e)
      • Refutation
        • P(j);
    • Try
      • R(F);
      • Threat
        • P(C)
      • Vars
        • S(f);N_GUARD,S_CUTR(h),XP(H)::S(B)
        • S(f);N_GUARD,N_SPINR(c),P_SPINR(h),XR(J)::S(B)
        • P(e);XP(H)::QAB1(I)
        • S(f);N_GUARD,S_CUTR(h)::S(B),XS(f)
        • S(f);N_GUARD,S_CUTR(h)::S(B)
        • P(j);OGATEB::QAB(I)
        • R(h);N_GUARD,P_SPINS(f)::S(B),XR(h)
        • S(b);N_GUARD::S(B)
        • S(b);N_GUARD::S(B),XS(b)
      • Refutation
        • R(h);N_SPINR(c),P_SPINS(f)
    • Try
      • R(F);CHECK,XR(c)
      • Refutation
        • P(g);P_SPINP(g),XR(F)
  • Actual
    • R(F);
    • Threat
      • P(C)
    • Vars
      • S(f);N_GUARD,P_SPINS(f),S_CUTR(h),XP(H)::S(B)
      • S(f);N_GUARD,N_SPINR(c),P_SPINR(h),XR(J)::S(B)
      • P(e);P_SPINP(e),XP(H)::QAB1(I)
      • S(f);N_GUARD,S_CUTR(h)::S(B),XS(f)
      • S(f);N_GUARD,S_CUTR(h)::S(B)
      • P(j);OGATEB::QAB(I)
      • R(h);P_PINP(C),P_SPINS(f)::R(F)+P(H),XR(c)
      • R(h);N_GUARD,P_SPINS(f)::S(B),XR(h)
      • R(h);N_SPINR(c),P_SPINS(f)::R(F)+P(H),XP(e)
      • S(b);N_GUARD::S(B)
      • S(b);N_GUARD::S(B),XS(b)
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