MESON Chess Problem Database

Problem Display
PID: 176514 (6QB/1p5p/1R2N2P/2pP1Pp1/2r1k1p1/p1p3P1/B1P2P2/6K1 w - - 0 1)

Sutara, Josef

3rd Comm., Schach-Echo, 1970

6QB/1p5p/1R2N2P/2pP1Pp1/2r1k1p1/p1p3P1/B1P2P2/6K1

#2

12 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Sxg5#
    • 1...Kxf5
      • 2.Qxh7#
  • Tries
    • 1.Bxc4?
      • 1...Kf3
        • 2.Sxg5#
      • 1...Kxf5
        • 2.Bd3#
        • 2.Qxh7#
      • 1...a2!
    • 1.Qf7?
      • threat
        • 2.Sxg5#
      • 1...Kxd5
        • 2.Sxg5#
        • 2.Qxb7#
      • 1...Kf3!
    • 1.Qxh7?
      • 1...Kxd5
        • 2.Qxb7#
      • 1...Ra4
        • 2.Sxg5#
      • 1...Rb4
        • 2.Sxg5#
      • 1...Rd4
        • 2.Sxg5#
      • 1...Kf3!
    • 1.Qxg5?
      • 1...Kf3
        • 2.Qe3#
      • 1...Ra4
        • 2.Qf4#
        • 2.Qxg4#
      • 1...Rb4
        • 2.Qf4#
        • 2.Qxg4#
      • 1...Rd4
        • 2.Qf4#
        • 2.Qxg4#
      • 1...Kxd5!
    • 1.Qc8?
      • 1...Kxd5
        • 2.Qxb7#
      • 1...Kxf5
        • 2.Sxc5#
      • 1...Ra4
        • 2.Sxg5#
      • 1...Rb4
        • 2.Sxg5#
      • 1...Rd4
        • 2.Sxg5#
      • 1...Kf3!
  • Keys
    • 1.Qe8!
      • 1...Kf3
        • 2.Sxg5#
      • 1...Kxd5
        • 2.Sc7#
      • 1...Kxf5
        • 2.Sg7#
      • 1...Ra4
        • 2.Sd4#
      • 1...Rb4
        • 2.Sd4#
      • 1...Rd4
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINR(c),S_FLIGHT,XP(F)::QAB(K)+S(I),XP(g)
    • K(d);OGATEB,S_FLIGHT,XP(G)::QAB(K),XP(i)
  • Tries
    • Try
      • B(B);XR(c)
      • Vars
        • K(d);S_FLIGHT::S(I),XP(g)
      • Refutation
        • P(a);
    • Try
      • Q(K);
      • Threat
        • S(I),XP(g)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(K);XP(i)
      • Vars
        • K(d);OGATEB,P_SPINR(c),S_FLIGHT,XP(F)::QAB(K),XP(h)
        • R(c);::S(I),XP(g)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(K);XP(g)
      • Vars
        • K(d);S_FLIGHT::QAR1(K)
      • Refutation
        • K(d);P_SPINR(c),S_FLIGHT,XP(F)
    • Try
      • Q(K);
      • Vars
        • K(d);OGATEB,P_SPINR(c),S_FLIGHT,XP(F)::QAB(K),XP(h)
        • K(d);S_FLIGHT,XP(G)::QAB(K)+S(I),XP(f)
        • R(c);::S(I),XP(g)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(K);
    • Vars
      • K(d);S_FLIGHT::S(I),XP(g)
      • K(d);P_SPINR(c),S_FLIGHT,XP(F)::S(I)
      • K(d);S_FLIGHT,XP(G)::S(I)
      • R(c);::QAR(K)+S(I)
      • R(c);::QAR(K)+S(I),XR(c)
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