MESON Chess Problem Database

Problem Display
PID: 132146 (2K4B/2N5/4p3/1p2p1R1/2bb1k1P/1pQ1p1N1/p1r1P3/q7 w - - 0 1)

Casa, Alex

Arbejder-Skak, 1954

2K4B/2N5/4p3/1p2p1R1/2bb1k1P/1pQ1p1N1/p1r1P3/q7

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Sxe6#
    • 1...Bc5
      • 2.Bxe5#
    • 1...Bb6
      • 2.Bxe5#
    • 1...Ba7
      • 2.Bxe5#
    • 1...e4
      • 2.Sh5#
  • Tries
    • 1.Qxd4+?
      • 1...exd4
        • 2.Be5#
      • 1...e4
        • 2.Sh5#
        • 2.Be5#
        • 2.Qxe4#
      • 1...Qxd4!
    • 1.Qxc2?
      • threat
        • 2.Sh5#
        • 2.Qe4#
      • 1...Bxe2
        • 2.Qe4#
      • 1...Qb1
        • 2.Sh5#
      • 1...Qh1
        • 2.Sh5#
      • 1...Bd3
        • 2.Sxe6#
      • 1...Bd5
        • 2.Sh5#
      • 1...e4
        • 2.Sh5#
        • 2.Qxe4#
      • 1...bxc2!
    • 1.Qd3?
      • threat
        • 2.Sh5#
        • 2.Qe4#
      • 1...Rxe2
        • 2.Qe4#
      • 1...Qh1
        • 2.Sh5#
      • 1...Bd5
        • 2.Sh5#
      • 1...e4
        • 2.Sh5#
        • 2.Qxe4#
      • 1...Bxd3!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qf8#
      • 1...Bd3
        • 2.Bxe5#
      • 1...Bc5
        • 2.Sxe6#
      • 1...e4
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(f);N_GUARD::S(F),XP(k)
    • B(g);N_GUARD::B(H),XP(j)
    • P(j);SBLOCK::S(C)
  • Tries
    • Try
      • Q(B);CHECK,XB(g)
      • Vars
        • P(j);XQ(B)::B(H)
      • Refutation
        • Q(a);XQ(B)
    • Try
      • Q(B);XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XP(A)::QAR1(B)
        • Q(a);::S(C)
        • B(f);N_GUARD::S(F),XP(k)
        • B(f);::S(C)
      • Refutation
        • P(d);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(A)::QAR1(B)
        • Q(a);::S(C)
        • B(f);P_PINS(F)::S(C)
      • Refutation
        • B(f);P_PINS(F),XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • B(f);P_PINS(F),P_SPINB(g)::B(H),XP(j)
      • B(g);P_SPINB(f)::S(F),XP(k)
      • P(j);SBLOCK::S(C)
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