MESON Chess Problem Database

Problem Display
PID: 54088 (2b5/B1prp3/2P1Pp2/1pR5/3kp3/4p1n1/3p4/nBNQ2K1 w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Chess, 1943

2b5/B1prp3/2P1Pp2/1pR5/3kp3/4p1n1/3p4/nBNQ2K1

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Sxb3#
    • 1...Sf1
      • 2.Se2#
    • 1...Sh1
      • 2.Se2#
    • 1...Se2+
      • 2.Sxe2#
    • 1...Sf5
      • 2.Se2#
    • 1...Sh5
      • 2.Se2#
    • 1...e2
      • 2.Qxd2#
  • Tries
    • 1.Qa4+?
      • 1...b4
        • 2.Qxa1#
        • 2.Qxb4#
      • 1...bxa4!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Rc2#
      • 1...Se2+
        • 2.Sxe2#
      • 1...dxc1Q+
        • 2.Rxc1#
      • 1...dxc1R+
        • 2.Rxc1#
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1R+
        • 2.Qxd1#
      • 1...Sxh5
        • 2.Se2#
      • 1...dxc1S
        • 2.Rxc1#
      • 1...dxc1B
        • 2.Rxc1#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Sc2
        • 2.Rxc2#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sf5
        • 2.Se2#
      • 1...f5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::S(B),XS(a)
    • S(d);N_GUARD::S(B)
    • S(d);CHECK,N_GUARD::S(B),XS(d)
    • P(c);N_GUARD::QAR2(C),XP(b)
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(b)
      • Refutation
        • P(g);XQ(C)
  • Actual
    • Q(C);N_PINP(b)
    • Threat
      • B(H)+R(E)
    • Vars
      • S(d);CHECK,N_GUARD::S(B),XS(d)
      • P(b);CHECK,OGATE,XS(B)::B(H)+R(E),XQ(b)
      • P(b);CHECK,OGATE,XS(B)::B(H)+R(E),XR(b)
      • P(b);CHECK,OGATEB::QAR(C),XQ(b)
      • P(b);CHECK,OGATEB::QAR(C),XR(b)
      • S(d);N_GUARD,XQ(C)::S(B)
      • P(b);OGATE,XS(B)::B(H)+R(E),XS(b)
      • P(b);OGATE,XS(B)::B(H)+R(E),XB(b)
      • R(j);N_GUARD::QAR1(C),XR(j)
      • S(a);::B(H)+R(E),XS(a)
      • S(a);N_GUARD::S(B),XS(a)
      • S(d);N_GUARD::S(B)
      • P(h);OGATEB::QAB(C)
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