MESON Chess Problem Database

Problem Display
PID: 64939 (5N2/1B6/1rqBR1K1/Rn1k4/1PpP4/8/7n/3Q1Nb1 w - - 0 1)

Schor, Laszlo

Good Companions (August), 1921

5N2/1B6/1rqBR1K1/Rn1k4/1PpP4/8/7n/3Q1Nb1

#2

10 + 7

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Rxb5#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bxd4
      • 2.Se3#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qe4#
      • 1...Kxd4
        • 2.Qd2#
      • 1...c3!
    • 1.Qf3+?
      • 1...Kxd4
        • 2.Be5#
      • 1...Sxf3!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qh5#
      • 1...Bxd4
        • 2.Se3#
      • 1...Sxd4
        • 2.Bxb6#
      • 1...c3
        • 2.Qb3#
      • 1...Be3
        • 2.Sxe3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sg4
        • 2.Qf3#
      • 1...Sd6
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::R(E),XS(d)
    • B(a);N_GUARD::S(B),XB(a)
    • B(a);N_GUARD,P_SPINB(a),XP(D)::S(B)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(e);N_SPINQ(g),N_SPINS(d),OGATEB,P-FLIGHT,XP(D)::QAR2(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);N_SPINQ(g),N_SPINS(d),P-FLIGHT,XP(D)::B(F)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • B(F);N_PINS(d),P_SPINR(G)
    • Threat
      • QAR(A)
    • Vars
      • B(a);N_GUARD,P_SPINB(a),XP(D)::S(B)
      • S(d);OGATEB,P_SPINS(d),XP(D)::R(E)+B(F),XR(f)
      • P(c);OGATEB::QAB(A)
      • B(a);N_GUARD::S(B),XB(a)
      • S(b);N_GUARD::QAB(A),XS(b)
      • S(b);N_GUARD::QAB(A)
      • S(d);N_PINR(G)::R1(G)
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