MESON Chess Problem Database

Problem Display
PID: 242855 (1Q2Nn2/4b3/8/2p3p1/3p1NR1/1Pk2p2/8/2K1R3 w - - 0 1)

Bakcsi, Gyorgy

Source?, 0000

1Q2Nn2/4b3/8/2p3p1/3p1NR1/1Pk2p2/8/2K1R3

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Sd5#
  • Tries
    • 1.Sc7?
      • threat
        • 2.Scd5#
      • 1...d3
        • 2.Sfd5#
      • 1...gxf4!
    • 1.Rd1?
      • threat
        • 2.Sd5#
        • 2.Rd3#
      • 1...d3
        • 2.Sd5#
        • 2.Rxd3#
      • 1...c4
        • 2.Sd5#
      • 1...gxf4!
    • 1.Re3+?
      • 1...d3
        • 2.Sd5#
        • 2.Rxd3#
      • 1...dxe3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Sd5#
        • 2.Qc4#
      • 1...gxf4
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);SBLOCK::S(D)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • P(c);SBLOCK::S(D)
      • Refutation
        • P(e);XS(D)
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::S(D)
      • Refutation
        • P(e);XS(D)
    • Try
      • R(B);CHECK
      • Refutation
        • P(c);XR(B)
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • P(e);XS(D)::QAR1(F)
      • P(d);::QAR1(F),XP(d)
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