MESON Chess Problem Database

Problem Display
PID: 124327 (1b1NR1BB/7K/5P1n/3P1p2/1PrkpP1N/1Qp4R/n2P4/8 w - - 0 1)

Legentil, Georges

Source?, 1948

1b1NR1BB/7K/5P1n/3P1p2/1PrkpP1N/1Qp4R/n2P4/8

#2

13 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Se6#
    • 1...Rc5
      • 2.Se6#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Rc7+
      • 2.f7#
    • 1...Rc8
      • 2.Se6#
    • 1...Sg4
      • 2.Sxf5#
    • 1...cxd2
      • 2.Qe3#
    • 1...c2
      • 2.Qe3#
  • Tries
    • 1.Rd3+?
      • 1...exd3
        • 2.Sf3#
      • 1...Kxd3!
    • 1.Rxe4+?
      • 1...Kxe4
        • 2.Qxc4#
      • 1...fxe4!
    • 1.dxc3+?
      • 1...Rxc3
        • 2.Se6#
      • 1...Sxc3!
  • Keys
    • 1.d3!
      • threat
        • 2.Qxc4#
      • 1...Rc7+
        • 2.f7#
      • 1...Rxb4
        • 2.Se6#
      • 1...exd3
        • 2.Sf3#
      • 1...Rc5
        • 2.Se6#
      • 1...Rc6
        • 2.Sxc6#
      • 1...Rc8
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(c);XP(D)::S(J)
    • R(c);::S(J)
    • R(c);N_GUARD::S(J),XR(c)
    • R(c);CHECK,S_CUTB(h)::B(M)+P(H)
    • S(g);N_GUARD::S(F),XP(f)
    • P(b);OGATE,XP(A)::QAB1(B)
    • P(b);OGATE::QAB1(B)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • P(e);SBLOCK,XR(C)::S(F)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b),XR(C)
    • Try
      • R(K);CHECK,XP(e)
      • Vars
        • K(d);P-FLIGHT,XR(K)::QAR2(B),XR(c)
      • Refutation
        • P(f);XR(K)
    • Try
      • P(A);CHECK,XP(b)
      • Vars
        • R(c);XP(A)::S(J)
      • Refutation
        • S(a);XP(A)
  • Actual
    • P(A);
    • Threat
      • QAR1(B),XR(c)
    • Vars
      • R(c);CHECK,S_CUTB(h)::B(M)+P(H)
      • R(c);XP(D)::S(J)
      • P(e);N_GUARD,SBLOCK,XP(A)::S(F)
      • R(c);::S(J)
      • R(c);N_GUARD::S(J),XR(c)
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