MESON Chess Problem Database

Problem Display
PID: 108371 (3RB3/3N4/1B1rp3/1n1kPp1p/1Kp4r/2Pp2P1/Q2Nn3/8 w - - 0 1)

Hall, James S

Toronto Telegram, 1947

3RB3/3N4/1B1rp3/1n1kPp1p/1Kp4r/2Pp2P1/Q2Nn3/8

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qa8#
    • 1...Rh1
      • 2.Qxc4#
    • 1...Rh2
      • 2.Qxc4#
    • 1...Rh3
      • 2.Qxc4#
    • 1...Sed4
      • 2.Qxc4#
    • 1...Sf4
      • 2.Qxc4#
    • 1...Sbd4
      • 2.Qxc4#
    • 1...f4
      • 2.Qxc4#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sf6#
      • 1...Kc6
        • 2.Qa8#
      • 1...Rxd7
        • 2.Qa8#
      • 1...Ke4!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Sf6#
      • 1...Rxc4+
        • 2.Qxc4#
      • 1...Ke4
        • 2.Sd2#
      • 1...Kc6
        • 2.Qa8#
      • 1...Rxd7
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • K(f);N_SPINP(c),S_FLIGHT::QAB(A)
    • R(d);N_GUARD::QAB1(A),XP(c)
    • S(a);S_CUTR(d)::QAB1(A),XP(c)
    • S(e);S_CUTR(d)::QAB1(A),XP(c)
    • P(g);S_CUTR(d)::QAB1(A),XP(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(H)
      • Vars
        • K(f);N_SPINP(c),S_FLIGHT::QAB(A)
        • R(i);N_GUARD,P_SPINR(i),XS(H)::QAB(A)
      • Refutation
        • K(f);N_SPINP(c),S_FLIGHT
  • Actual
    • S(B);P_SPINS(B),XP(c)
    • Threat
      • S(H)
    • Vars
      • R(d);CHECK,OGATE,P_SPINR(d),XS(B)::QAB1(A),XR(d)
      • K(f);N_PINS(B),S_FLIGHT::S(B)
      • K(f);S_FLIGHT::QAB(A)
      • R(i);N_GUARD,P_SPINR(i),XS(H)::QAB(A)
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Developed and maintained by Brian Stephenson.
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