MESON Chess Problem Database

Problem Display
PID: 47360 (8/8/3K4/8/4k1P1/2P2R2/n7/7Q w - - 0 1)

Jonsson, Christer

Goteborg Postens, 1993

8/8/3K4/8/4k1P1/2P2R2/n7/7Q

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Rf2+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kd3!
    • 1.Qf1?
      • threat
        • 2.Qe2#
        • 2.Qd3#
      • 1...Sxc3
        • 2.Qd3#
      • 1...Sb4
        • 2.Qe2#
      • 1...Sc1!
    • 1.Qh2?
      • threat
        • 2.Qf4#
        • 2.Qe2#
      • 1...Sxc3
        • 2.Qf4#
      • 1...Sc1
        • 2.Qf4#
      • 1...Kxf3!
    • 1.Qh6?
      • threat
        • 2.Re3#
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sxc3
        • 2.Qe3#
        • 2.Qf4#
      • 1...Kxf3!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qe2#
        • 2.Qd3#
        • 2.Qd5#
      • 1...Sxc3
        • 2.Qd3#
      • 1...Sc1
        • 2.Qd5#
      • 1...Sb4
        • 2.Qe2#

This anticipates 88661(2000)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XP(B)::QAB1(A)
        • S(a);::QAR2(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XP(B)::QAR1(A)
        • S(a);::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • S(a);XP(B)::QAB1(A)
      • S(a);::QAB1(A)
      • S(a);::QAR2(A)
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