MESON Chess Problem Database

Problem Display
PID: 221936 (8/B1Rpp2N/8/1K2kP2/1pp1rR2/2qp2p1/6Q1/7B w - - 0 1)

Tuxen, Harri Viggo

Stella Polaris, 1967

8/B1Rpp2N/8/1K2kP2/1pp1rR2/2qp2p1/6Q1/7B

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Qxe4#
    • 1...Rxf4
      • 2.Qd5#
    • 1...d6
      • 2.Qxe4#
  • Tries
    • 1.Rc5+?
      • 1...Kd4
        • 2.Rxe4#
        • 2.Qxe4#
        • 2.Qg1#
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qxe4#
      • 1...Kd6
        • 2.Bb8#
      • 1...d5!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Rxd7#
      • 1...Kd4
        • 2.Qxe4#
      • 1...Kxf4
        • 2.Qxe4#
      • 1...Kd5
        • 2.Rxd7#
      • 1...Kd6
        • 2.Rc5#
      • 1...Rxf4
        • 2.Qd5#
      • 1...Qd4
        • 2.Rc5#
      • 1...Rd4
        • 2.Rc5#
      • 1...d5
        • 2.Rxc4#
      • 1...d6
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(g);S_FLIGHT,XR(C)::QAR1(B),XR(f)
    • R(f);OGATE,SBLOCK,XR(C)::QAR1(B)
    • P(h);SBLOCK::QAR1(B),XR(f)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(g);S_FLIGHT::B(F)
      • Refutation
        • P(h);P_SPINP(h)
  • Actual
    • B(F);
    • Threat
      • B(F)+R(G),XP(h)
    • Vars
      • K(g);P_SPINR(f),S_FLIGHT::QAR1(B),XR(f)
      • K(g);S_FLIGHT,XR(C)::QAR1(B),XR(f)
      • K(g);P-FLIGHT,P_SPINR(f)::R(G),XP(h)
      • K(g);S_FLIGHT::B(F)+R(G)
      • R(f);OGATE,SBLOCK,XR(C)::QAR1(B)
      • Q(a);SBLOCK::B(F)+R(G),DCHECK
      • R(f);::B(F)+R(G),DCHECK
      • P(h);N_GUARD,SBLOCK::B(F)+R(G),XP(e)
      • P(h);SBLOCK::QAR1(B),XR(f)
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Developed and maintained by Brian Stephenson.
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