MESON Chess Problem Database

Problem Display
PID: 64014 (1Nqn3b/p2Nr3/P3pR2/1QBk4/5P1p/2KB3r/bR5n/8 w - - 0 1)

Rice, William Bayard

4th Prize, Good Companions (April), 1917

1Nqn3b/p2Nr3/P3pR2/1QBk4/5P1p/2KB3r/bR5n/8

#2

10 + 11

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5+
      • 2.Qxc5#
    • 1...Rxd3+
      • 2.Qxd3#
    • 1...Bb1
      • 2.Qc4#
      • 2.Qb3#
    • 1...Bb3
      • 2.Qxb3#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bxf6+
      • 2.Sxf6#
    • 1...Sc6
      • 2.Ba3#
      • 2.Bb4#
      • 2.Bxe7#
    • 1...e5
      • 2.Rd6#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qd4#
        • 2.Qe4#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Bxf6+
        • 2.Sxf6#
      • 1...Qxd7
        • 2.Qd4#
      • 1...Qxb8
        • 2.Qe4#
      • 1...Rxd7
        • 2.Qd4#
      • 1...Re3
        • 2.Qd4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sf3
        • 2.Be4#
        • 2.Qe4#
      • 1...Sc6
        • 2.Qe4#
      • 1...e5
        • 2.Rd6#
        • 2.Qe4#
      • 1...Rxd3+!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Rd4#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Rxd3+
        • 2.Qxd3#
      • 1...Bxf6+
        • 2.Sxf6#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sf3
        • 2.Be4#
      • 1...Sc6
        • 2.Bxe7#
      • 1...e5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(i);CHECK,OGATE,P_SPINQ(i),XB(F)::QAR1(E),XQ(i)
    • R(c);CHECK,OGATE,P_PINB(F),XB(C)::QAR2(E),XR(c)
    • B(a);N_GUARD::QAB(E),XB(a)
    • B(a);N_GUARD::QAB1(E),XB(a)
    • B(k);CHECK,XR(H)::S(I),XB(k)
    • P(f);N_PINR(H)::R1(H)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);CHECK,OGATE,XB(F)::QAR1(E),XQ(i)
        • B(k);CHECK,XR(H)::S(I),XB(k)
        • Q(i);XS(I)::QAR1(E)
        • Q(i);XS(J)::QAB1(E)
        • R(h);XS(I)::QAR1(E)
        • R(c);::QAR1(E)
        • B(a);N_GUARD::QAB1(E),XB(a)
        • S(j);::QAB1(E)
      • Refutation
        • R(c);CHECK,P_PINB(F),XB(C)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • Q(i);CHECK,OGATE,P_SPINQ(i),XB(F)::QAR1(E),XQ(i)
      • R(c);CHECK,OGATE,P_PINB(F),XB(C)::QAR2(E),XR(c)
      • B(k);CHECK,XR(H)::S(I),XB(k)
      • B(a);N_GUARD::QAB1(E),XB(a)
      • S(b);N_PINB(C),P_PINB(F)::B(C)
      • S(j);OGATE::QAR(E)+B(F),XR(h)
      • P(f);N_PINR(H)::R1(H)
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