MESON Chess Problem Database

Problem Display
PID: 210149 (7K/2p5/1p5R/3k2N1/4pP2/4P1n1/5nQ1/2R5 w - - 0 1)

Baxter, FL

Suomen Shakki, 1958

7K/2p5/1p5R/3k2N1/4pP2/4P1n1/5nQ1/2R5

#2

7 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qa2#
      • 2.Qd2#
    • 1...Sfh1
      • 2.Qa2#
      • 2.Qd2#
    • 1...Sd3
      • 2.Qa2#
    • 1...Sh3
      • 2.Qa2#
      • 2.Qd2#
    • 1...Sg4
      • 2.Qa2#
      • 2.Qd2#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sxc7#
      • 1...c5
        • 2.Sc7#
      • 1...c6
        • 2.Sc7#
      • 1...Kd6!
    • 1.Qxf2?
      • threat
        • 2.Qa2#
        • 2.Qd2#
      • 1...Sf1
        • 2.Qa2#
      • 1...Sf5
        • 2.Qa2#
      • 1...c5
        • 2.Qd2#
      • 1...Se2!
  • Keys
    • 1.Sxe4!
      • 1...Sfxe4
        • 2.Qa2#
      • 1...Sgxe4
        • 2.Qg8#
      • 1...Sf1
        • 2.Sxf2#
      • 1...Sd1
        • 2.Sxg3#
      • 1...Sfh1
        • 2.Sxg3#
      • 1...Sd3
        • 2.Sxg3#
      • 1...Sh3
        • 2.Sxg3#
      • 1...Sg4
        • 2.Sxg3#
      • 1...Sgh1
        • 2.Sxf2#
      • 1...Se2
        • 2.Sxf2#
      • 1...Sf5
        • 2.Sxf2#
      • 1...Sh5
        • 2.Sxf2#
      • 1...b5
        • 2.Rc5#
      • 1...c5
        • 2.Rd6#
      • 1...c6
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(B)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E),XP(f)
      • Vars
        • P(f);::S(E)
      • Refutation
        • K(d);N_SPINP(c),P-FLIGHT
    • Try
      • Q(B);N_PINP(c),XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::QAB(B)
        • P(f);::QAR(B)
      • Refutation
        • S(b);
  • Actual
    • S(E);XP(c)
    • Vars
      • S(a);OGATE,P_SPINS(a),SBLOCK,XS(E)::QAB(B)
      • S(b);OGATE,P_SPINS(b),SBLOCK,XS(E)::QAB(B)
      • S(b);N_GUARD::QAB(B)+S(E),XS(a)
      • S(a);N_GUARD::QAB(B)+S(E),XS(b)
      • P(e);N_GUARD::R1(A)
      • P(f);N_GUARD::R1(F)
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