MESON Chess Problem Database

Problem Display
PID: 255974 (r1n2R2/3pk2N/1n6/q1r5/1Q6/2p4B/7B/3RK3 w - - 0 1)

Ceder, Sven Ture

Schackvarlden, 1941

r1n2R2/3pk2N/1n6/q1r5/1Q6/2p4B/7B/3RK3

#2

7 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Rxd7#
    • 1...Sc4
      • 2.Rxd7#
    • 1...Sd5
      • 2.Qe4#
    • 1...Sd6
      • 2.Bxd6#
    • 1...Sa7
      • 2.Bd6#
    • 1...d5
      • 2.Qh4#
  • Tries
    • 1.Be5?
      • threat
        • 2.Bf6#
        • 2.Qh4#
      • 1...Qxb4
        • 2.Bf6#
      • 1...Qa4
        • 2.Bf6#
      • 1...Sc4
        • 2.Bf6#
        • 2.Rxd7#
      • 1...c2
        • 2.Bf6#
      • 1...d5
        • 2.Qh4#
      • 1...Sd5!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Bd8#
      • 1...Sa4
        • 2.Rxd7#
      • 1...Sc4
        • 2.Rxd7#
      • 1...Sd5
        • 2.Qe4#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Sa7
        • 2.Bd6#
      • 1...d5
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::R1(A),XP(e)
    • S(d);::QAR(E)
    • S(h);N_GUARD,N_SPINR(c)::B(C),XS(h)
    • S(h);N_GUARD::B(C)
    • P(e);::QAB(E)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);N_SPINR(c),XQ(E)::B(C)
        • Q(b);::B(C)
        • P(a);P_PINQ(E)::B(C)
        • P(e);::QAB(E)
      • Refutation
        • S(d);
  • Actual
    • B(C);
    • Threat
      • B(C)
    • Vars
      • S(d);N_GUARD::R1(A),XP(e)
      • S(d);::QAR(E)
      • S(h);N_GUARD,N_SPINR(c)::B(C),XS(h)
      • S(h);N_GUARD::B(C)
      • P(e);::QAB(E)
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