MESON Chess Problem Database

Problem Display
PID: 234690 (8/8/K2p4/8/k7/8/N1P2Q2/1b6 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2011

8/8/K2p4/8/k7/8/N1P2Q2/1b6

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qb4#
        • 2.Qa5#
      • 1...Bxa2
        • 2.Qa5#
      • 1...Bxc2
        • 2.Qb4#
      • 1...Ka3!
    • 1.Qc5?
      • threat
        • 2.Sc3#
        • 2.Qb4#
        • 2.Qa5#
      • 1...Bxa2
        • 2.Qa5#
      • 1...Bxc2
        • 2.Qb4#
      • 1...dxc5!
    • 1.Qd2?
      • threat
        • 2.Qb4#
        • 2.Qa5#
      • 1...Bxa2
        • 2.Qa5#
      • 1...Bxc2
        • 2.Qb4#
      • 1...Ka3!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qa5#
        • 2.Qb3#
        • 2.Qb4#
      • 1...Ka3
        • 2.Qb3#
      • 1...Bxa2
        • 2.Qa5#
      • 1...Bxc2
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(A)::QAR1(C)
        • B(a);XP(B)::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);XS(A)::QAR1(C)
        • B(a);XP(B)::QAR1(C)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(A)::QAR1(C)
        • B(a);XP(B)::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • B(a);XS(A)::QAR1(C)
      • B(a);XP(B)::QAR1(C)
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