MESON Chess Problem Database

Problem Display
PID: 21279 (8/3p4/Bn1p4/pQ6/p2kpBp1/K3R1P1/8/2n3N1 w - - 0 1)

Warton, Edwin

Chess Amateur (The), 1918

8/3p4/Bn1p4/pQ6/p2kpBp1/K3R1P1/8/2n3N1

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Se2#
    • 1...Se2
      • 2.Sxe2#
    • 1...Sb3
      • 2.Se2#
    • 1...Sd3
      • 2.Se2#
    • 1...Sc4+
      • 2.Qxc4#
    • 1...Sd5
      • 2.Qc4#
    • 1...Sa8
      • 2.Qc4#
    • 1...Sc8
      • 2.Qc4#
    • 1...d5
      • 2.Qxb6#
  • Tries
    • 1.Rc3?
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Kxc3
        • 2.Qb2#
      • 1...d5
        • 2.Qc5#
      • 1...Sa2
        • 2.Se2#
      • 1...Se2
        • 2.Sxe2#
      • 1...Sb3
        • 2.Se2#
      • 1...Sd3
        • 2.Se2#
      • 1...Sd5
        • 2.Qc4#
      • 1...Sa8
        • 2.Qc4#
      • 1...Sc8
        • 2.Qc4#
      • 1...e3!
    • 1.Rd3+?
      • 1...Sxd3
        • 2.Se2#
      • 1...exd3!
    • 1.Rxe4+?
      • 1...Kc3
        • 2.Qb2#
      • 1...Kxe4!
    • 1.Qc6?
      • threat
        • 2.Rxe4#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...d5
        • 2.Qc3#
        • 2.Qxb6#
      • 1...Sd5
        • 2.Qc4#
      • 1...dxc6!
    • 1.Qb4+?
      • 1...Kd5
        • 2.Qxd6#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...axb4+!
  • Keys
    • 1.Qxb6+!
      • 1...Kd5
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(g);CHECK,N_GUARD::QAR1(F),XS(g)
    • S(g);N_GUARD::QAR1(F)
    • P(h);SBLOCK::QAB(F),XS(g)
  • Tries
    • Try
      • R(C);
      • Vars
        • S(g);CHECK,N_GUARD::QAR1(F),XS(g)
        • K(c);OGATEB,S_FLIGHT,XR(C)::QAB1(F)
        • P(h);N_GUARD::QAB1(F)
        • S(a);N_GUARD::S(A)
        • S(a);N_GUARD::S(A),XS(a)
        • S(g);N_GUARD::QAR1(F)
      • Refutation
        • P(d);
    • Try
      • R(C);CHECK
      • Vars
        • S(a);XR(C)::S(A)
      • Refutation
        • P(d);XR(C)
    • Try
      • R(C);CHECK,XP(d)
      • Vars
        • K(c);S_FLIGHT::QAB1(F)
      • Refutation
        • K(c);P-FLIGHT,XR(C)
    • Try
      • Q(F);
      • Threat
        • R1(C),XP(d)
      • Vars
        • S(g);CHECK,N_GUARD::QAR1(F),XS(g)
        • S(g);N_GUARD::QAR1(F)
      • Refutation
        • P(i);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(F),XP(h)
        • S(g);CHECK,N_GUARD,P_SPINS(g)::QAR1(F),XS(g)
      • Refutation
        • P(f);CHECK,XQ(F)
  • Actual
    • Q(F);CHECK,XS(g)
    • Vars
      • K(c);P-FLIGHT::QAR1(F),XP(h)
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