MESON Chess Problem Database

Problem Display
PID: 48041 (8/2p1K3/8/8/2N1kp2/8/3Q2R1/8 w - - 0 1)

Asplund, Per Ivan Rune

Schach-Echo, 1959

8/2p1K3/8/8/2N1kp2/8/3Q2R1/8

#2

4 + 3

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qe2#
      • 2.Qd5#
    • 1...Kf5
      • 2.Qc2#
      • 2.Qd3#
      • 2.Qd5#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Qe2#
        • 2.Qd5#
      • 1...f3
        • 2.Rg4#
        • 2.Qe3#
      • 1...c6!
    • 1.Sd6+?
      • 1...Kf3
        • 2.Qe2#
        • 2.Qf2#
      • 1...Ke5
        • 2.Re2#
        • 2.Rg5#
      • 1...cxd6!
    • 1.Rg5?
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Qg2#
      • 1...f3
        • 2.Re5#
        • 2.Qe3#
      • 1...c6!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Qd5#
      • 1...Kf5
        • 2.Qe5#
        • 2.Qd3#
        • 2.Qd5#
      • 1...Kxd4!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rxf4#
      • 1...Kf3
        • 2.Qg2#
      • 1...Kf5
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB1(A)
      • Refutation
        • P(c);
    • Try
      • S(C);CHECK
      • Refutation
        • P(c);XS(C)
    • Try
      • R(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • R(B);P_PINP(b)
    • Threat
      • R1(B),XP(b)
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAB1(A)
      • K(a);N_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
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