MESON Chess Problem Database

Problem Display
PID: 221530 (3r4/B2pnb2/K2QqP2/1p3NRN/4k2n/1p4pr/4Bp1b/4R3 w - - 0 1)

Wrobel, Marian

British Chess Magazine, 1927

3r4/B2pnb2/K2QqP2/1p3NRN/4k2n/1p4pr/4Bp1b/4R3

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qf4#
    • 1...Qxf5
      • 2.Qd4#
    • 1...Qe5
      • 2.Qd3#
    • 1...Qxd6+
      • 2.Sxd6#
    • 1...Qxf6
      • 2.Sxf6#
    • 1...Sf3
      • 2.Bd3#
    • 1...Shxf5
      • 2.Rg4#
    • 1...Sexf5
      • 2.Rg4#
  • Tries
    • 1.Qxe6+?
      • 1...Bxe6
        • 2.Sd6#
      • 1...dxe6!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Rd4#
      • 1...Qxd6+
        • 2.Sxd6#
      • 1...Qxf5
        • 2.Qd4#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Shxf5
        • 2.Rg4#
      • 1...Sexf5
        • 2.Rg4#
      • 1...Qc4
        • 2.Qf4#
      • 1...Qd5
        • 2.Qf4#
      • 1...Qe5
        • 2.Qd3#
      • 1...Sf3
        • 2.Bd3#
      • 1...Sc6
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(i);N_PINQ(G),SBLOCK::QAR1(G)
    • Q(i);N_PINQ(G),XS(C)::QAR1(G)
    • Q(i);N_PINQ(G),SBLOCK::QAB1(G)
    • Q(i);CHECK,XQ(G)::S(C),XQ(i)
    • Q(i);XP(H)::S(E),XQ(i)
    • S(g);SBLOCK::R(A)+B(B),DCHECK
    • S(g);SBLOCK,XS(C)::R(D)
    • S(k);SBLOCK,XS(C)::R(D)
  • Tries
    • Try
      • Q(G);CHECK,N_SPINQ(G),XQ(i)
      • Vars
        • B(l);XQ(G)::S(C)
      • Refutation
        • P(j);XQ(G)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • Q(i);CHECK,XQ(G)::S(C),XQ(i)
      • Q(i);N_PINQ(G),XS(C)::QAR1(G)
      • Q(i);XP(H)::S(E),XQ(i)
      • S(g);SBLOCK,XS(C)::R(D)
      • S(k);SBLOCK,XS(C)::R(D)
      • Q(i);N_PINQ(G)::QAR1(G)
      • Q(i);N_PINQ(G),SBLOCK::QAB1(G)
      • S(g);SBLOCK::B(B)
      • S(k);N_PINQ(G)::QAR1(G)
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