MESON Chess Problem Database

Problem Display
PID: 78883 (2r2B2/p2B4/4p3/1P2n1QR/KpknP1b1/4p2q/N1PRp3/3r1N2 w - - 0 1)

Pituk, Alexander

1st HM., Praca, 1949

2r2B2/p2B4/4p3/1P2n1QR/KpknP1b1/4p2q/N1PRp3/3r1N2

#2

11 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Sxe3#
    • 1...Qh1
      • 2.Sxe3#
    • 1...Qh2
      • 2.Sxe3#
    • 1...Qh4
      • 2.Sxe3#
    • 1...Qxh5
      • 2.Sxe3#
    • 1...Bf3
      • 2.Sxe3#
    • 1...Sb3
      • 2.cxb3#
    • 1...Sdf3
      • 2.Sxe3#
    • 1...Sxb5
      • 2.Bxb5#
    • 1...Sf5
      • 2.Bxe6#
    • 1...Sd3
      • 2.cxd3#
    • 1...Sef3
      • 2.Sxe3#
    • 1...Sc6
      • 2.Qc5#
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Qxd4#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Rxd2
        • 2.Sxd2#
      • 1...Sxc2
        • 2.Rxc2#
      • 1...Sxb5
        • 2.Bxb5#
      • 1...Sb3
        • 2.cxb3#
      • 1...Sdf3
        • 2.Qb3#
      • 1...Sf5
        • 2.Bxe6#
      • 1...Sdc6
        • 2.Qc5#
      • 1...Sd3
        • 2.cxd3#
      • 1...Sef3
        • 2.Qd3#
      • 1...Sec6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(d);N_GUARD::S(A),XP(c)
    • Q(d);N_GUARD,XR(I)::S(A),XP(c)
    • B(h);S_CUTQ(d)::S(A),XP(c)
    • S(g);OGATE::P(C),XS(g)
    • S(g);S_CUTQ(d)::S(A),XP(c)
    • S(g);OGATE,XP(G)::B(J),XS(g)
    • S(g);N_GUARD,S_CUTB(h)::B(J),XP(j)
    • S(i);OGATE::P(C),XS(i)
    • S(i);S_CUTQ(d)::S(A),XP(c)
    • S(i);OGATE::QAR1(H)
  • Actual
    • Q(H);XP(c)
    • Threat
      • QAR1(H),XS(g)
    • Vars
      • Q(d);XQ(H)::S(A),XQ(d)
      • R(a);XR(D)::S(A),XR(a)
      • S(g);OGATE,XP(C)::R(D),XS(g)
      • S(g);OGATE,XP(G)::B(J),XS(g)
      • S(g);OGATE::P(C),XS(g)
      • S(g);N_GUARD,S_CUTQ(d)::QAB1(H)
      • S(g);N_GUARD,S_CUTB(h)::B(J),XP(j)
      • S(g);OGATE::QAR1(H)
      • S(i);OGATE::P(C),XS(i)
      • S(i);N_GUARD,S_CUTQ(d)::QAB1(H)
      • S(i);OGATE::R1(I)
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