MESON Chess Problem Database

Problem Display
PID: 11017 (2r1N2B/5Q2/6pK/Ppk2pNR/1rP1p1p1/1p1bn1P1/1n1q4/b7 w - - 0 1)

Boorer, PA

Chess, 1936

2r1N2B/5Q2/6pK/Ppk2pNR/1rP1p1p1/1p1bn1P1/1n1q4/b7

#2

9 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.Qxc7#
    • 1...Ra8
      • 2.Qc7#
    • 1...Rb8
      • 2.Qc7#
    • 1...Rd8
      • 2.Qc7#
    • 1...Rxe8
      • 2.Qc7#
    • 1...Sd1
      • 2.Qd5#
    • 1...Sf1
      • 2.Qd5#
    • 1...Sc2
      • 2.Qd5#
    • 1...Sg2
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
  • Tries
    • 1.Qa7+?
      • 1...Kxc4
        • 2.Qd4#
      • 1...Kc6!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxc8#
      • 1...Kxc4
        • 2.Qd4#
      • 1...Rxc4
        • 2.Qd6#
      • 1...Rxe8
        • 2.Qc7#
      • 1...Bxc4
        • 2.Sxe4#
      • 1...Sbxc4
        • 2.Se6#
      • 1...Sexc4
        • 2.Bd4#
      • 1...bxc4
        • 2.Se6#
        • 2.Bd4#
      • 1...Ra4
        • 2.Qxb5#
      • 1...Rc6
        • 2.Qd4#
      • 1...Rc7
        • 2.Qxc7#
      • 1...Ra8
        • 2.Qc7#
      • 1...Rb8
        • 2.Qc7#
      • 1...Rd8
        • 2.Qc7#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • R(n);N_GUARD::QAR2(G),XR(n)
    • R(n);N_GUARD::QAR2(G)
    • R(n);N_GUARD,XS(H)::QAR2(G)
    • S(f);N_GUARD,P_PINS(D)::QAR1(G)
    • S(f);N_GUARD,P_PINS(D)::QAR1(G),XS(f)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(k);OGATE,P-FLIGHT,XP(B)::QAR1(G)
      • Refutation
        • K(k);P-FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAR(G),XR(n)
    • Vars
      • K(k);P-FLIGHT,XP(B)::QAR1(G)
      • R(g);SBLOCK,XP(B)::QAB1(G)
      • R(n);N_GUARD,XS(H)::QAR2(G)
      • B(e);N_GUARD,SBLOCK,XP(B)::S(D),XP(h)
      • S(b);SBLOCK,XP(B)::S(D)
      • S(f);P_PINS(D),SBLOCK,XP(B)::B(I)
      • R(g);N_GUARD::QAR1(G),XP(j)
      • R(n);SBLOCK::QAB1(G)
      • R(n);N_GUARD::QAR2(G),XR(n)
      • R(n);N_GUARD::QAR2(G)
      • S(f);N_GUARD,P_PINS(D)::QAR1(G),XS(f)
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Developed and maintained by Brian Stephenson.
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