MESON Chess Problem Database

Problem Display
PID: 27870 (8/8/N7/3B4/3pp3/2kr1Q2/K3R3/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/8/N7/3B4/3pp3/2kr1Q2/K3R3/8

#2

5 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qxe4?
      • 1...Rd1
        • 2.Rc2#
        • 2.Qc2#
      • 1...Re3
        • 2.Rc2#
        • 2.Qc2#
      • 1...Rf3
        • 2.Rc2#
        • 2.Qc2#
      • 1...Rg3
        • 2.Rc2#
        • 2.Qc2#
      • 1...Rh3
        • 2.Rc2#
        • 2.Qc2#
      • 1...Rd2+!
    • 1.Qf8?
      • threat
        • 2.Qa3#
        • 2.Qb4#
        • 2.Qc5#
        • 2.Qc8#
      • 1...Rd1
        • 2.Qa3#
      • 1...Re3
        • 2.Qa3#
      • 1...Rf3
        • 2.Qa3#
      • 1...Rg3
        • 2.Qa3#
      • 1...Rh3
        • 2.Qa3#
      • 1...Rd2+!
  • Keys
    • 1.Bxe4!
      • threat
        • 2.Qxd3#
      • 1...Kc4
        • 2.Qxd3#
      • 1...Rxf3
        • 2.Rc2#
      • 1...Re3
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);N_PINR(b),XP(d)
      • Refutation
        • R(b);CHECK
    • Try
      • Q(C);N_PINR(b)
      • Threat
        • DUALS(4)
      • Vars
        • R(b);::QAR2(C)
      • Refutation
        • R(b);CHECK
  • Actual
    • B(D);XP(d)
    • Threat
      • QAR1(C),XR(b)
    • Vars
      • K(a);N_SPINR(b),P-FLIGHT::QAB1(C),XR(b)
      • R(b);N_SPINR(b),XQ(C)::R1(B)
      • R(b);::R1(B)
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