MESON Chess Problem Database

Problem Display
PID: 64263 (qR4B1/2rP4/1n2R3/p6b/pn4r1/Nkp5/NPp3p1/Q1B3K1 w - - 0 1)

Guidelli, Giorgio

2nd Prize, Good Companions (February), 1915

qR4B1/2rP4/1n2R3/p6b/pn4r1/Nkp5/NPp3p1/Q1B3K1

#2

10 + 12

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Sxa2
      • 2.Rexb6#
    • 1...Sd3
      • 2.Rexb6#
    • 1...Sa6
      • 2.Rexb6#
    • 1...cxb2
      • 2.Re3#
      • 2.Qxb2#
  • Tries
    • 1.bxc3?
      • threat
        • 2.Qb2#
      • 1...Sd3
        • 2.Rexb6#
      • 1...Sc4!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Sc1#
      • 1...c1Q+
        • 2.Sxc1#
      • 1...c1R+
        • 2.Sxc1#
      • 1...Sxa2
        • 2.Rexb6#
      • 1...cxb2
        • 2.Re3#
      • 1...c1S
        • 2.Sxc1#
      • 1...c1B
        • 2.Sxc1#
      • 1...S4d5
        • 2.Rexb6#
      • 1...Sd3
        • 2.Rexb6#
      • 1...Sa6
        • 2.Rexb6#
      • 1...Sc6
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(f);P_SPINS(j),XS(D)::B(J)+R(G),DCHECK,XS(j)
    • S(f);P_SPINS(j)::B(J)+R(G),DCHECK,XS(j)
  • Tries
    • Try
      • P(E);XP(d)
      • Threat
        • QAR1(A)
      • Vars
        • S(f);P_SPINS(j)::B(J)+R(G),DCHECK,XS(j)
      • Refutation
        • S(j);P_SPINS(f)
  • Actual
    • B(B);
    • Threat
      • S(D)
    • Vars
      • P(a);CHECK::S(D),XQ(a)
      • P(a);CHECK::S(D),XR(a)
      • S(f);P_SPINS(j),XS(D)::B(J)+R(G),DCHECK,XS(j)
      • P(d);XP(E)::B(J)+R(G),DCHECK
      • P(a);::S(D),XS(a)
      • P(a);::S(D),XB(a)
      • S(f);P_SPINS(j),S_CUTB(i),S_CUTQ(l),S_CUTR(g),S_CUTR(k)::R(G),XS(j)
      • S(f);P_SPINS(j)::B(J)+R(G),DCHECK,XS(j)
      • S(f);N_GUARD,P_SPINS(j),S_CUTQ(l),S_CUTR(k)::B(J)+R(G)
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