MESON Chess Problem Database

Problem Display
PID: 55022 (2NK2Q1/8/5P2/R2nk3/1p3R1P/1N6/2pq4/6BB w - - 0 1)

Hebelt, Vaclav

3rd Prize, Szachy, 1964

2NK2Q1/8/5P2/R2nk3/1p3R1P/1N6/2pq4/6BB

#2

10 + 5

3747 FIDE Album (1962-1964) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Qg5#
  • Tries
    • 1.Bd4+?
      • 1...Kxf4
        • 2.Qg5#
      • 1...Qxd4!
    • 1.Bc5?
      • threat
        • 2.Bd6#
      • 1...Sxf4+
        • 2.Bd4#
      • 1...Kxf4
        • 2.Qg5#
      • 1...Qxf4!
    • 1.Rf3?
      • threat
        • 2.Qe8#
      • 1...Ke4
        • 2.Qe6#
      • 1...Qf4!
    • 1.Rxd5+?
      • 1...Kxf4
        • 2.Qg5#
      • 1...Qxd5+!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qg5#
      • 1...Sc3+
        • 2.Sd3#
      • 1...Se3+
        • 2.Sd3#
      • 1...Sxf4+
        • 2.Sd7#
      • 1...Sb6+
        • 2.Sd3#
      • 1...Sxf6+
        • 2.Sd3#
      • 1...Sc7+
        • 2.Sd3#
      • 1...Se7+
        • 2.Sd3#
      • 1...Kxf4
        • 2.Qg5#
      • 1...Qxf4
        • 2.Qe6#
      • 1...Qg2
        • 2.Sd3#
      • 1...Qd3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINS(d),S_FLIGHT,XR(D)::QAB1(J)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(e);N_SPINS(d),S_FLIGHT,XR(D)::QAB1(J)
      • Refutation
        • Q(b);XB(A)
    • Try
      • B(A);N_PINS(d)
      • Threat
        • B(A)
      • Vars
        • S(d);CHECK,SBLOCK,XR(D)::R(F)+B(A),DCHECK
        • K(e);S_FLIGHT,XR(D)::QAB1(J)
      • Refutation
        • Q(b);XR(D)
    • Try
      • R(D);
      • Threat
        • QAR(J)
      • Vars
        • K(e);N_SPINS(d),P-FLIGHT::QAR2(J)
      • Refutation
        • Q(b);
    • Try
      • R(F);CHECK,P_SPINR(F),XS(d)
      • Vars
        • K(e);S_FLIGHT,XR(D)::QAB1(J)
      • Refutation
        • Q(b);CHECK,XR(F)
  • Actual
    • S(C);N_PINS(d)
    • Threat
      • QAR2(J)
    • Vars
      • S(d);CHECK::R(F)+S(C),DCHECK
      • S(d);CHECK,SBLOCK,XR(D)::R(F)+S(C),DCHECK
      • S(d);CHECK,XP(G)::R(F)+S(C),DCHECK
      • K(e);S_FLIGHT,XR(D)::QAB1(J)
      • Q(b);SBLOCK,XR(D)::QAR1(J)
      • Q(b);N_GUARD::S(C)
      • Q(b);N_GUARD::S(C),XQ(b)
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