MESON Chess Problem Database

Problem Display
PID: 53842 (K7/p1N1p3/B1Q5/r1n1r3/7R/1pk2q1R/2p5/2B4b w - - 0 1)

Hewis, R

Kipping, Cyril Stanley

Chess, 1943

K7/p1N1p3/B1Q5/r1n1r3/7R/1pk2q1R/2p5/2B4b

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Rxd3#
      • 2.Rc4#
    • 1...Re1
      • 2.Sd5#
    • 1...Re2
      • 2.Sd5#
    • 1...Rd5
      • 2.Sxd5#
    • 1...Re6
      • 2.Sd5#
  • Tries
    • 1.Rxf3+?
      • 1...Re3
        • 2.Sd5#
        • 2.Rxe3#
      • 1...Bxf3!
    • 1.Qxf3+?
      • 1...Re3
        • 2.Sd5#
      • 1...Sd3
        • 2.Rc4#
      • 1...Bxf3+!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Rc4#
      • 1...Rxd5
        • 2.Sxd5#
      • 1...Re4
        • 2.Qd2#
      • 1...Se4
        • 2.Qc4#
      • 1...Ra4
        • 2.Sb5#
      • 1...b2
        • 2.Bd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(h);N_GUARD::S(F)
    • R(h);N_GUARD,N_PINQ(E)::S(F),XR(h)
  • Tries
    • Try
      • R(B);CHECK,N_SPINQ(E),XQ(e)
      • Refutation
        • B(a);P_PINQ(E),XR(B)
    • Try
      • Q(E);CHECK,N_PINS(g),XQ(e)
      • Vars
        • R(h);P_SPINR(h)::S(F)
        • S(g);P_SPINS(g)::R1(C)
      • Refutation
        • B(a);CHECK,P_SPINB(a),XQ(E)
  • Actual
    • Q(E);N_PINS(g)
    • Threat
      • R1(C)
    • Vars
      • R(h);XQ(E)::S(F),XR(h)
      • R(h);N_PINQ(E)::QAB1(E)
      • S(g);N_PINQ(E)::QAR1(E)
      • R(f);N_GUARD::S(F)
      • P(c);SBLOCK::B(A)
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