MESON Chess Problem Database

Problem Display
PID: 17369 (3b1BNn/2pP3p/R1qQ1nkN/8/4rP1K/2r4p/6b1/1B4R1 w - - 0 1)

Rice, William Bayard

HM., Four Way Pin Ty., 1946

3b1BNn/2pP3p/R1qQ1nkN/8/4rP1K/2r4p/6b1/1B4R1

#2

10 + 11

14773 The Best American Chess Problems of 1946 1948

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa6
      • 2.Bxe4#
    • 1...Qb6
      • 2.Bxe4#
    • 1...Be7
      • 2.Sxe7#
  • Tries
    • 1.Rxg2+?
      • 1...Rg3
        • 2.Rxg3#
      • 1...hxg2!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qg7#
      • 1...Qxd7
        • 2.Rxf6#
      • 1...Bxe7
        • 2.Sxe7#
      • 1...Sxd7
        • 2.Bxe4#
      • 1...Sxg8
        • 2.Bxe4#
      • 1...Sg4
        • 2.f5#
      • 1...Sd5
        • 2.Bxe4#
      • 1...Sh5
        • 2.Bxe4#
      • 1...Se8
        • 2.Bxe4#
      • 1...Sf7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • Q(e);N_GUARD,XR(E)::B(A),XR(d)
    • Q(e);N_GUARD::B(A),XR(d)
    • B(j);N_GUARD::S(J),XB(j)
  • Tries
    • Try
      • R(B);CHECK,XB(a)
      • Vars
        • R(b);N_GUARD,N_SPINR(d),P_SPINR(b)::R(B),XR(b)
      • Refutation
        • P(c);XR(B)
  • Actual
    • Q(F);N_PINS(f)
    • Threat
      • QAR1(F)
    • Vars
      • Q(e);OGATE,P_SPINS(f),XP(H)::R1(E),XS(f)
      • B(j);XQ(F)::S(J),XB(j)
      • S(f);N_GUARD,P_PINQ(F),P_SPINQ(e),XP(H)::B(A),XR(d)
      • S(f);N_GUARD,P_PINQ(F),P_SPINQ(e),XS(J)::B(A),XR(d)
      • S(f);N_PINP(C),N_SPINB(a),P_PINQ(F),P_SPINQ(e)::P(C)
      • S(f);N_GUARD,P_PINQ(F),P_SPINQ(e)::B(A),XR(d)
      • S(k);N_GUARD::QAB1(F),XS(k)
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