MESON Chess Problem Database

Problem Display
PID: 18680 (4R3/b3N3/2PB3p/r2p1N2/P1p1kPR1/7r/2K2pP1/1B6 w - - 0 1)

Biscay, Pierre

2nd Prize, Problem 018. TT, 1957

4R3/b3N3/2PB3p/r2p1N2/P1p1kPR1/7r/2K2pP1/1B6

#2

11 + 8

4872 Themes-64 1957
3976 FIDE Album (1956-1958) 1961
721 Variantim 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Rh2
      • 2.Kc1#
      • 2.Kd1#
      • 2.Kb2#
      • 2.Kd2#
      • 2.Kc3#
    • 1...Rc3+
      • 2.Kxc3#
    • 1...Rh4
      • 2.Kc1#
      • 2.Kd1#
      • 2.Kb2#
      • 2.Kd2#
      • 2.Kc3#
    • 1...Rh5
      • 2.Kc1#
      • 2.Kd1#
      • 2.Kb2#
      • 2.Kd2#
      • 2.Kc3#
    • 1...Be3
      • 2.Kd1#
      • 2.Kb2#
      • 2.Kc3#
  • Tries
    • 1.Sg3+?
      • 1...Ke3
        • 2.Sef5#
      • 1...Kd4
        • 2.Sef5#
      • 1...Rxg3!
  • Keys
    • 1.Se3!
      • threat
        • 2.S7f5#
      • 1...Kxe3
        • 2.Sf5#
      • 1...Kd4
        • 2.S7f5#
      • 1...Rxe3
        • 2.f5#
      • 1...Bxe3
        • 2.Kc3#
      • 1...Bd4
        • 2.Kd2#
      • 1...d4
        • 2.S7d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(b);CHECK::B(A)+K(B),XR(b)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P-FLIGHT::R(K)+S(J),DCHECK
        • K(d);P-FLIGHT::S(J)
      • Refutation
        • R(b);XS(G)
  • Actual
    • S(G);
    • Threat
      • R(K)+S(J)
    • Vars
      • K(d);P-FLIGHT,XS(G)::R(K)+S(J),DCHECK
      • K(d);P-FLIGHT::S(J)
      • R(b);SBLOCK,XS(G)::R(F)+P(E)
      • B(h);SBLOCK,XS(G)::B(A)+K(B)
      • B(h);SBLOCK::B(A)+K(B)
      • P(f);SBLOCK::R(K)+S(J)
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Developed and maintained by Brian Stephenson.
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