MESON Chess Problem Database

Problem Display
PID: 234612 (8/6b1/1K4p1/2Bk4/5Q2/7B/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2003

8/6b1/1K4p1/2Bk4/5Q2/7B/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bh6
      • 2.Qd4#
    • 1...Bf8
      • 2.Qd4#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qe4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...gxf5!
    • 1.Qd2+?
      • 1...Kc4
        • 2.Be6#
      • 1...Ke5
        • 2.Qd4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Ke4!
    • 1.Qe3?
      • threat
        • 2.Be6#
        • 2.Qe6#
      • 1...Kc4
        • 2.Be6#
      • 1...Be5!
    • 1.Qf3+?
      • 1...Kc4
        • 2.Bf1#
        • 2.Be6#
      • 1...Ke5!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kxc4!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qe6#
      • 1...Ke5
        • 2.Qd4#
      • 1...Be5
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(c);N_GUARD,P_PINB(C)::QAR1(B),XB(c)
    • B(c);N_GUARD::QAR1(B)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB1(B)
      • Vars
        • B(c);N_GUARD,P_PINB(C)::QAR1(B),XB(c)
      • Refutation
        • P(b);XB(A)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(A)
        • K(a);P-FLIGHT::QAB1(B)
        • B(c);N_GUARD,P_PINB(C),P_SPINB(c)::QAR1(B),XB(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • B(c);
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(a);P-FLIGHT::QAB1(B)
      • B(c);SBLOCK::B(A)
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