MESON Chess Problem Database

Problem Display
PID: 89994 (3q4/3RN3/1pP1P3/bKnp1b2/1Npk4/2r1p1Qn/4P3/B7 w - - 0 1)

Pachman, Vladimir

Die Schwalbe, 1961

3q4/3RN3/1pP1P3/bKnp1b2/1Npk4/2r1p1Qn/4P3/B7

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qg7#
    • 1...Se4
      • 2.Sc2#
      • 2.Sxf5#
  • Tries
    • 1.Sexd5?
      • threat
        • 2.Qxe3#
      • 1...Ke4
        • 2.Sxc3#
      • 1...Be4
        • 2.Bxc3#
      • 1...Se4
        • 2.Sc2#
      • 1...Qg5!
    • 1.Bxc3+?
      • 1...Ke4
        • 2.Qe5#
        • 2.Qf3#
      • 1...Kxc3!
    • 1.Rxd5+?
      • 1...Ke4
        • 2.Qe5#
        • 2.Qf3#
      • 1...Qxd5!
    • 1.Qf4+?
      • 1...Be4
        • 2.Sc2#
        • 2.Sf5#
        • 2.Qf6#
      • 1...Se4
        • 2.Sc2#
        • 2.Sxf5#
      • 1...Sxf4!
  • Keys
    • 1.Sbxd5!
      • threat
        • 2.Qxe3#
      • 1...Ke4
        • 2.Sf6#
      • 1...Be4
        • 2.Qg7#
      • 1...Se4
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(i);SBLOCK::QAB(C)
  • Tries
    • Try
      • S(I);XP(h)
      • Threat
        • QAB1(C),XP(b)
      • Vars
        • K(e);N_SPINR(a),P-FLIGHT::S(I),XR(a)
        • B(i);SBLOCK::B(A),XR(a)
        • S(g);SBLOCK,S_CUTB(i)::S(D)
      • Refutation
        • Q(k);
    • Try
      • B(A);CHECK,XR(a)
      • Refutation
        • K(e);N_SPINP(h),P_SPINP(b),S_FLIGHT,XB(A)
    • Try
      • R(H);CHECK,XP(h)
      • Refutation
        • Q(k);XR(H)
    • Try
      • Q(C);CHECK
      • Refutation
        • S(c);XQ(C)
  • Actual
    • S(D);XP(h)
    • Threat
      • QAB1(C),XP(b)
    • Vars
      • K(e);N_SPINR(a),P-FLIGHT::S(D)
      • B(i);SBLOCK::QAB(C)
      • S(g);SBLOCK::S(I),XB(i)
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