MESON Chess Problem Database

Problem Display
PID: 185140 (1Q6/B7/8/2pB4/1PKR2P1/3P1P1p/2N1pkpp/4R1nn w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Sachsische Zeitung, 2000

(First published on Sat May 13 2000)

1Q6/B7/8/2pB4/1PKR2P1/3P1P1p/2N1pkpp/4R1nn

#2

11 + 8

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...cxd4
      • 2.Bxd4#
  • Tries
    • 1.Bxc5?
      • 1...Sg3
        • 2.Rf4#
      • 1...Sxf3!
    • 1.Re4?
      • 1...Kxf3
        • 2.Qf4#
      • 1...Sxf3
        • 2.R4xe2#
      • 1...Sg3!
    • 1.Rf4?
      • 1...Sxf3
        • 2.Rxf3#
      • 1...Sg3
        • 2.Bxc5#
      • 1...Kg3!
    • 1.Qxh2?
      • 1...cxb4
        • 2.Rf4#
      • 1...cxd4
        • 2.Bxd4#
      • 1...Sg3
        • 2.Qxg1#
      • 1...Sxf3!
  • Keys
    • 1.Qf4!
      • 1...Sxf3
        • 2.Qxf3#
      • 1...cxb4
        • 2.Re4#
      • 1...cxd4
        • 2.Bxd4#
      • 1...Sg3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(h);OGATE,P_SPINP(h),XR(G)::B(J),XP(h)
  • Tries
    • Try
      • B(J);XP(h)
      • Vars
        • S(b);SBLOCK::B(J)+R(G)
      • Refutation
        • S(a);XP(D)
    • Try
      • R(G);P_PINP(h)
      • Vars
        • K(d);N_SPINP(h),OGATEB,P-FLIGHT,XP(D)::QAR1(K)
        • S(a);N_GUARD,XP(D)::R1(G),XP(c)
      • Refutation
        • S(b);
    • Try
      • R(G);P_PINP(h)
      • Vars
        • S(a);OGATE,P_SPINS(a),XP(D)::R1(G),XS(a)
        • S(b);SBLOCK::B(J),XP(h)
      • Refutation
        • K(d);N_SPINP(h),S_FLIGHT
    • Try
      • Q(K);P_PINP(e),XP(f)
      • Vars
        • P(h);OGATEB,XP(E)::B(J)+R(G)
        • P(h);OGATE,XR(G)::B(J),XP(h)
        • S(b);SBLOCK::QAB1(K),XS(a)
      • Refutation
        • S(a);XP(D)
  • Actual
    • Q(K);
    • Vars
      • S(a);OGATE,P_SPINS(a),XP(D)::QAR1(K),XS(a)
      • P(h);OGATEB,XP(E)::B(J)+R(G)
      • P(h);OGATE,P_SPINP(h),XR(G)::B(J),XP(h)
      • S(b);SBLOCK::QAB1(K)
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