MESON Chess Problem Database

Problem Display
PID: 95655 (1qb1N2n/5r1p/2P3BK/2Bnk1N1/2P2p1R/6P1/5p2/bQR1r3 w - - 0 1)

Grabowski, Kazimierz

1st Prize, L'Italia Scacchistica, 1919

1qb1N2n/5r1p/2P3BK/2Bnk1N1/2P2p1R/6P1/5p2/bQR1r3

#2

11 + 11

6490 yacpdb 2009
102 Probleemblad 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc1
      • 2.Qe4#
    • 1...Rd1
      • 2.Qe4#
    • 1...Rf1
      • 2.Qe4#
    • 1...Rg1
      • 2.Qe4#
    • 1...Rh1
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rd7
      • 2.Qf5#
    • 1...Be6
      • 2.Sf3#
    • 1...Se3
      • 2.Qe4#
    • 1...Sb4
      • 2.Qxa1#
    • 1...Sb6
      • 2.Qxa1#
    • 1...Sf6
      • 2.gxf4#
    • 1...Se7
      • 2.Qxb8#
  • Tries
    • 1.Sxf7+?
      • 1...Ke6
        • 2.Qf5#
      • 1...Sxf7+!
    • 1.Bd6+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Qxd6!
    • 1.Qxa1+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Qb2!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Rxd5#
      • 1...Rxd1
        • 2.Qe4#
      • 1...Qd6
        • 2.Bxd6#
      • 1...Rd7
        • 2.Qf5#
      • 1...Bd4
        • 2.Bxd4#
      • 1...Be6
        • 2.Sf3#
      • 1...Sc3
        • 2.Bd4#
      • 1...Se3
        • 2.Qe4#
      • 1...Sb4
        • 2.Qxa1#
      • 1...Sb6
        • 2.Qxa1#
      • 1...Sf6
        • 2.gxf4#
      • 1...Sc7
        • 2.Bd6#
      • 1...Se7
        • 2.Qxb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,XR(B)::QAR1(A)
    • R(b);N_GUARD::QAR1(A)
    • R(b);N_GUARD,P_PINR(E)::QAR1(A)
    • R(b);N_GUARD::QAR1(A),XR(b)
    • R(g);N_GUARD,S_CUTB(j)::QAR1(A)
    • B(j);SBLOCK::S(G)
    • S(e);S_CUTR(b)::QAR1(A)
    • S(e);N_GUARD,S_CUTQ(i)::QAB(A),XB(a)
    • S(e);N_GUARD,S_CUTR(g)::P(C),XP(d)
    • S(e);N_GUARD,S_CUTR(g)::QAB(A),XQ(i)
  • Tries
    • Try
      • S(G);CHECK,XR(g)
      • Vars
        • K(f);P-FLIGHT::QAB1(A)
      • Refutation
        • S(k);CHECK,XS(G)
    • Try
      • B(F);CHECK
      • Vars
        • K(f);P_SPINP(d),S_FLIGHT::QAR1(A)
      • Refutation
        • Q(i);P_PINB(I),XB(F)
    • Try
      • Q(A);CHECK,XB(a)
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB(A),XS(e)
      • Refutation
        • Q(i);P_SPINQ(i)
  • Actual
    • R(B);
    • Threat
      • R1(B),XS(e)
    • Vars
      • R(b);N_GUARD,XR(B)::QAR1(A)
      • Q(i);N_GUARD,P_PINB(I)::B(F),XQ(i)
      • R(g);N_GUARD,S_CUTB(j)::QAR1(A)
      • B(a);N_GUARD::B(F),XB(a)
      • B(j);SBLOCK::S(G)
      • S(e);S_CUTB(a)::B(F)
      • S(e);S_CUTR(b)::QAR1(A)
      • S(e);N_GUARD,S_CUTQ(i)::QAB(A),XB(a)
      • S(e);N_GUARD,S_CUTR(g)::P(C),XP(d)
      • S(e);S_CUTQ(i)::B(F)
      • S(e);N_GUARD,S_CUTR(g)::QAB(A),XQ(i)
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