MESON Chess Problem Database

Problem Display
PID: 12241 (2q5/1p1p1N1p/1r3Bp1/1B2R3/r2kN1Q1/p6K/n1P1pP2/4n3 w - - 0 1)

Chandler, Guy Wills

Comm., The Problemist, 1976/I

2q5/1p1p1N1p/1r3Bp1/1B2R3/r2kN1Q1/p6K/n1P1pP2/4n3

#2

9 + 12

6104 A Tribute to G W Chandler 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3+
      • 2.Sg3#
    • 1...Rxb5
      • 2.Rc5#
    • 1...d5
      • 2.Re6#
    • 1...d6
      • 2.Rc5#
      • 2.Rf5#
      • 2.Rg5#
      • 2.Rh5#
  • Tries
    • 1.Re7+?
      • 1...Kd5
        • 2.Qg5#
      • 1...Rxf6!
    • 1.Re8+?
      • 1...Kd5
        • 2.Qg5#
      • 1...Rxf6!
    • 1.Qxe2?
      • threat
        • 2.Qe3#
      • 1...d5+
        • 2.Re6#
      • 1...d6+
        • 2.Rf5#
      • 1...Rxb5
        • 2.Rxb5#
        • 2.Rc5#
      • 1...Sxc2
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
      • 1...Sg2
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
      • 1...Qc3+!
    • 1.c3+?
      • 1...Qxc3+
        • 2.Sg3#
      • 1...Sxc3!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qe3#
      • 1...Qc3+
        • 2.Sg3#
      • 1...d5+
        • 2.Re6#
      • 1...d6+
        • 2.Rf5#
      • 1...Rxb5
        • 2.Rc5#
      • 1...Sxc2
        • 2.Qd2#
      • 1...Sg2
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(l);CHECK,SBLOCK::QAR(E)+S(D)
    • R(g);N_GUARD,XB(F)::B(H)+R(G)
    • P(j);P_PINQ(E),SBLOCK::B(H)+R(G)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR(E)
      • Refutation
        • R(g);XB(H)
    • Try
      • R(G);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR(E)
      • Refutation
        • R(g);XB(H)
    • Try
      • Q(E);XP(c)
      • Threat
        • QAB1(E)
      • Vars
        • P(j);CHECK,SBLOCK::B(H)+R(G)
        • P(j);CHECK,S_CUTR(g)::B(H)+R(G)
      • Refutation
        • Q(l);CHECK
    • Try
      • P(A);CHECK
      • Vars
        • Q(l);CHECK,SBLOCK,XP(A)::QAR(E)+S(D)
      • Refutation
        • S(b);XP(A)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • Q(l);CHECK,SBLOCK::QAR(E)+S(D)
      • P(j);CHECK,SBLOCK::B(H)+R(G)
      • P(j);CHECK,S_CUTR(g)::B(H)+R(G)
      • R(g);N_GUARD,XB(F)::B(H)+R(G)
      • S(a);N_GUARD,XP(A)::QAR2(E)
      • S(a);N_GUARD::QAR2(E)
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