MESON Chess Problem Database

Problem Display
PID: 63718 (5K2/5QRp/2Np2N1/B5p1/8/4krRn/4rp2/1B3b1q w - - 0 1)

Tikkanen, Tapani

3rd HM., Springaren, 1965

5K2/5QRp/2Np2N1/B5p1/8/4krRn/4rp2/1B3b1q

#2

8 + 10

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Rxf3#
      • 2.Qxf3#
    • 1...Qh2
      • 2.Rxf3#
      • 2.Qxf3#
    • 1...Rxg3
      • 2.Qb3#
    • 1...Sf4
      • 2.Qa7#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qb3#
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qa7#
        • 2.Qe7#
      • 1...Rxg3
        • 2.Qb3#
      • 1...Re1
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Ra2
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Rb2
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Rc2
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Rd2
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Sf4
        • 2.Qa7#
      • 1...d5
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...hxg6!
    • 1.Qf4+?
      • 1...gxf4
        • 2.Re7#
      • 1...Sxf4!
    • 1.Qf6?
      • threat
        • 2.Re7#
      • 1...Rxg3
        • 2.Qc3#
      • 1...Sf4
        • 2.Qd4#
      • 1...Rc2!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Re7#
      • 1...Rxg3
        • 2.Qd3#
      • 1...Sf4
        • 2.Qe4#

Anticipated by 166842(1955)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(f);N_PINQ(F),N_SPINR(f),XR(B)::QAR(F)
    • S(g);N_PINQ(F)::QAB(F)
  • Tries
    • Try
      • B(A);N_SPINQ(F)
      • Threat
        • DUALS(5)
      • Vars
        • R(f);N_SPINR(f),XR(B)::QAR(F)
        • S(g);::QAB(F)
      • Refutation
        • P(j);XS(E)
    • Try
      • Q(F);CHECK
      • Vars
        • P(h);XQ(F)::R(G)
      • Refutation
        • S(g);XQ(F)
    • Try
      • Q(F);
      • Threat
        • R(G)
      • Vars
        • R(f);N_PINQ(F),N_SPINR(f),XR(B)::QAR2(F)
        • S(g);N_PINQ(F)::QAB1(F)
      • Refutation
        • R(c);
  • Actual
    • Q(F);
    • Threat
      • R(G)
    • Vars
      • R(f);N_PINQ(F),N_SPINR(f),XR(B)::QAR1(F)
      • S(g);N_PINQ(F)::QAR1(F)
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