MESON Chess Problem Database

Problem Display
PID: 19309 (knRN4/4P3/3N4/q7/1PnB2pr/4p3/Q5R1/K2b2bB w - - 0 1)

Wimsatt, William Kurtz (Jr)

Chess, 1937

knRN4/4P3/3N4/q7/1PnB2pr/4p3/Q5R1/K2b2bB

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa2+
      • 2.Rxa2#
    • 1...Qa6
      • 2.Qxa6#
    • 1...Qa7
      • 2.Qxa7#
    • 1...Bb3
      • 2.Rh2#
    • 1...Bh2
      • 2.Re2#
    • 1...Sb2
      • 2.Qxa5#
    • 1...Sd2
      • 2.Qxa5#
    • 1...Se5
      • 2.Qxa5#
    • 1...Sb6
      • 2.Qxa5#
    • 1...Sxd6
      • 2.Qxa5#
    • 1...e2
      • 2.Rh2#
  • Tries
    • 1.Rxg4+?
      • 1...Bf3
        • 2.Bxf3#
      • 1...Rxh1!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc7#
      • 1...Qxa2+
        • 2.Rxa2#
      • 1...Ba4
        • 2.Rh2#
      • 1...Bh2
        • 2.Re2#
      • 1...Sa3
        • 2.Qd5#
      • 1...Sb6
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(g);CHECK,N_SPINQ(g),OGATE,XQ(C)::B(B)+R(D),DCHECK,XQ(g)
    • Q(g);::QAR2(C),XQ(g)
    • Q(g);::QAR1(C),XQ(g)
    • B(a);N_GUARD::B(B)+R(D)
    • B(b);S_CUTR(f)::B(B)+R(D)
    • S(d);N_GUARD::QAR(C),XQ(g)
    • S(d);N_GUARD,XS(G)::QAR(C),XQ(g)
    • P(c);S_CUTB(a)::B(B)+R(D)
  • Tries
    • Try
      • R(D);CHECK,XP(e)
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::B(B),XB(a)
      • Refutation
        • R(f);XB(B)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • Q(g);CHECK,N_SPINQ(g),OGATE,XQ(C)::B(B)+R(D),DCHECK,XQ(g)
      • B(a);N_GUARD,N_PINQ(C),N_SPINQ(g)::B(B)+R(D)
      • B(b);S_CUTR(f)::B(B)+R(D)
      • S(d);N_PINQ(C),N_SPINQ(g)::QAB(C)
      • S(d);N_GUARD::QAR(C),XQ(g)
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