MESON Chess Problem Database

Problem Display
PID: 239251 (4B3/2p1p2Q/1p1b3R/2pkp3/3P1P2/1P6/1B6/2RK4 w - - 0 1)

Labai, Zoltan

Sachove umeni (Ceskoslovensky sach), 2013

4B3/2p1p2Q/1p1b3R/2pkp3/3P1P2/1P6/1B6/2RK4

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...cxd4
      • 2.Bc6#
    • 1...c4
      • 2.bxc4#
  • Tries
    • 1.Rxc5+?
      • 1...Bxc5
        • 2.Bc6#
      • 1...bxc5!
    • 1.dxc5?
      • threat
        • 2.Qd3#
      • 1...Bxc5
        • 2.Bc6#
      • 1...e4!
    • 1.dxe5?
      • threat
        • 2.Qd3#
      • 1...Bxe5
        • 2.Bc6#
      • 1...c4!
  • Keys
    • 1.Qd3!
      • threat
        • 2.dxc5#
        • 2.dxe5#
      • 1...cxd4
        • 2.Bc6#
      • 1...exd4
        • 2.Qf3#
      • 1...exf4
        • 2.Qf3#
        • 2.dxc5#
      • 1...c4
        • 2.bxc4#
      • 1...e4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);XP(E)::B(I)
    • P(a);OGATE::P(D),XP(a)
  • Tries
    • Try
      • R(A);CHECK,XP(a)
      • Vars
        • B(e);XR(A)::B(I)
      • Refutation
        • P(d);XR(A)
    • Try
      • P(E);XP(a)
      • Threat
        • QAR2(H)
      • Vars
        • B(e);XP(E)::B(I)
      • Refutation
        • P(c);
    • Try
      • P(E);XP(c)
      • Threat
        • QAR2(H)
      • Vars
        • B(e);XP(E)::B(I)
      • Refutation
        • P(a);
  • Actual
    • Q(H);
    • Threat
      • DUALS(2)
    • Vars
      • P(a);P_SPINP(a),XP(E)::B(I)
      • P(c);N_GUARD,P_SPINP(c),XP(E)::QAB(H)
      • P(a);OGATE::P(D),XP(a)
      • P(c);SBLOCK::QAB1(H)
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