MESON Chess Problem Database

Problem Display
PID: 63694 (BBbn4/4N1bQ/2p3R1/4pp2/5k2/2K1p3/2P1P1R1/7r w - - 0 1)

Tyler, JH

Chess, 1946

BBbn4/4N1bQ/2p3R1/4pp2/5k2/2K1p3/2P1P1R1/7r

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.R6g4#
    • 1...Ra1
      • 2.Qh4#
    • 1...Rb1
      • 2.Qh4#
    • 1...Rc1
      • 2.Qh4#
    • 1...Rd1
      • 2.Qh4#
    • 1...Re1
      • 2.Qh4#
    • 1...Rf1
      • 2.Qh4#
    • 1...Rg1
      • 2.Qh4#
    • 1...Rh4
      • 2.Qxh4#
  • Tries
    • 1.Rf2+?
      • 1...Ke4
        • 2.Rg4#
        • 2.Qxh1#
      • 1...exf2!
    • 1.Qxh1?
      • threat
        • 2.Qh4#
      • 1...Ke4
        • 2.Rf2#
        • 2.R2g4#
      • 1...Bf6!
    • 1.Qh3?
      • threat
        • 2.Qf3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Rf1
        • 2.Qh4#
      • 1...Rxh3!
    • 1.Qxg7?
      • threat
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qxe5#
      • 1...Sf7!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Rd4#
      • 1...e4+
        • 2.Rf6#
      • 1...Ke4
        • 2.Rg4#
      • 1...Rd1
        • 2.Qh4#
      • 1...Se6
        • 2.Qxf5#
      • 1...c5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • K(c);N_SPINP(d),P-FLIGHT,P_SPINP(f)::R(E)
    • R(a);N_GUARD::QAR2(G)
    • R(a);N_GUARD,P_PINP(A)::QAR2(G)
    • R(a);N_GUARD::QAR2(G),XR(a)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • P(b);XR(C)
    • Try
      • Q(G);XR(a)
      • Threat
        • QAR2(G)
      • Refutation
        • B(g);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(c);N_SPINP(d),P-FLIGHT,P_SPINP(f)::QAB1(G)
        • R(a);N_GUARD::QAR2(G)
      • Refutation
        • R(a);XQ(G)
    • Try
      • Q(G);XB(g)
      • Threat
        • QAB1(G),XP(d)
      • Vars
        • K(c);N_SPINP(d),P-FLIGHT,P_SPINP(f)::QAR1(G),XP(d)
      • Refutation
        • S(i);
  • Actual
    • R(E);N_PINP(d)
    • Threat
      • R(E)
    • Vars
      • P(d);CHECK,OGATEB,SBLOCK::B(I)+R(E)
      • K(c);P-FLIGHT,P_SPINP(e)::R(C)
      • R(a);N_GUARD::QAR2(G)
      • S(i);S_CUTB(h)::QAR1(G),XP(e)
      • P(f);::S(F)
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Developed and maintained by Brian Stephenson.
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