MESON Chess Problem Database

Problem Display
PID: 160171 (2R1K3/p3Rpp1/r2k1p2/8/1N4N1/4b3/1Qpq1p2/4r3 w - - 0 1)

Hawes, Frederick Thomas

Ravenscroft, Frank

Problem (Zagreb), 1966

2R1K3/p3Rpp1/r2k1p2/8/1N4N1/4b3/1Qpq1p2/4r3

#2

6 + 11

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rc6#
    • 1...Ra2
      • 2.Rc6#
    • 1...Ra3
      • 2.Rc6#
    • 1...Ra4
      • 2.Rc6#
    • 1...Ra5
      • 2.Rc6#
    • 1...Rc6
      • 2.Rxc6#
    • 1...Bc5
      • 2.Rd8#
    • 1...Bb6
      • 2.Rc6#
    • 1...f5
      • 2.Qe5#
    • 1...g5
      • 2.Qxf6#
    • 1...g6
      • 2.Qxf6#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Rd8#
        • 2.Qc7#
      • 1...c1Q
        • 2.Rd8#
      • 1...c1R
        • 2.Rd8#
      • 1...Rc6
        • 2.Rxc6#
        • 2.Rd8#
        • 2.Qxc6#
      • 1...Bc5
        • 2.Rd8#
        • 2.Qxc5#
      • 1...Bb6
        • 2.Rc6#
        • 2.Qc6#
      • 1...Qxc3!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Rd7#
      • 1...Rxa2
        • 2.Rc6#
      • 1...Rc6
        • 2.Rxc6#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Bd4
        • 2.Qd5#
      • 1...Bf4
        • 2.Qxa6#
      • 1...Bc5
        • 2.Rd8#
      • 1...Bg5
        • 2.Qxa6#
      • 1...Bb6
        • 2.Rc6#
      • 1...Bh6
        • 2.Qxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • R(f);N_GUARD::R1(E)
    • R(f);N_GUARD::R1(E),XR(f)
    • B(e);P_PINR(D),SBLOCK::R(E)
    • B(e);P_PINR(D),S_CUTR(f)::R1(E)
    • P(h);N_GUARD::QAB1(A)
    • P(k);N_GUARD::QAR2(A),XP(h)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::R(E)
      • Refutation
        • Q(c);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • R1(D)
    • Vars
      • R(f);N_GUARD,XQ(A)::R1(E)
      • R(f);N_GUARD::R1(E),XR(f)
      • Q(c);N_GUARD::QAR1(A),XQ(c)
      • B(e);P_PINR(D),S_CUTQ(c)::QAR1(A)
      • B(e);N_GUARD,P_PINR(D)::QAR(A),XR(f)
      • B(e);P_PINR(D),SBLOCK::R(E)
      • B(e);P_PINR(D),S_CUTR(f)::R1(E)
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