MESON Chess Problem Database

Problem Display
PID: 60736 (Rb3kN1/2pB2pP/r3p1PP/qr6/5N2/2p4p/3Q3K/8 w - - 0 1)

Guidelli, Giorgio

Good Companions (May), 1918

Rb3kN1/2pB2pP/r3p1PP/qr6/5N2/2p4p/3Q3K/8

#2

9 + 10

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Rxb8#
    • 1...Rd5
      • 2.Rxb8#
    • 1...Re5
      • 2.Rxb8#
    • 1...Rf5
      • 2.Rxb8#
    • 1...Rg5
      • 2.Rxb8#
    • 1...Rh5
      • 2.Rxb8#
    • 1...Ra7
      • 2.Sxe6#
    • 1...Rxa8
      • 2.Sxe6#
    • 1...c6
      • 2.Qd6#
  • Tries
    • 1.Bc6?
      • threat
        • 2.Sxe6#
        • 2.Qd8#
      • 1...Rxc6
        • 2.Qd8#
      • 1...cxd2
        • 2.Sxe6#
      • 1...gxh6
        • 2.Sxe6#
      • 1...Rb2
        • 2.Sxe6#
      • 1...Rd5
        • 2.Sxe6#
      • 1...Re5
        • 2.Rxb8#
        • 2.Qd8#
      • 1...e5
        • 2.Se6#
        • 2.Qd8#
      • 1...Qa2!
    • 1.Qd6+?
      • 1...cxd6
        • 2.Sxe6#
      • 1...Rxd6!
  • Keys
    • 1.Sh5!
      • threat
        • 2.hxg7#
      • 1...c5+
        • 2.Qf4#
      • 1...c6+
        • 2.Qd6#
      • 1...Rxh5
        • 2.Rxb8#
      • 1...gxh6
        • 2.Qxh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(d);N_GUARD::R(H),XB(i)
    • R(e);N_GUARD::S(C),XP(f)
    • R(e);N_GUARD,N_SPINB(i),XR(H)::S(C),XP(f)
    • P(g);N_GUARD,P_PINS(C),S_CUTR(e)::QAB(A)
  • Tries
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XB(F)::QAR2(A)
        • P(a);XQ(A)::S(C),XP(f)
        • P(h);XP(E)::S(C),XP(f)
        • R(d);P_PINQ(A)::S(C),XP(f)
        • R(d);::S(C),XP(f)
      • Refutation
        • Q(c);P_PINQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • P(g);XQ(A)::S(C),XP(f)
      • Refutation
        • R(e);XQ(A)
  • Actual
    • S(C);
    • Threat
      • P(E),XP(h)
    • Vars
      • P(g);CHECK,S_CUTR(d)::QAR(A)
      • P(g);CHECK,N_GUARD,S_CUTR(e)::QAB(A)
      • R(d);N_GUARD,XS(C)::R(H),XB(i)
      • P(h);OGATE,XP(E)::QAB(A),XP(h)
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