MESON Chess Problem Database

Problem Display
PID: 96363 (K6n/B2Q4/3p4/n2k4/R4P2/4pN1p/8/1b1r3q w - - 0 1)

Delobel, Bernard

Problemesis, 2005

K6n/B2Q4/3p4/n2k4/R4P2/4pN1p/8/1b1r3q

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Rd4#
    • 1...Re1
      • 2.Rd4#
    • 1...Rf1
      • 2.Rd4#
    • 1...Rg1
      • 2.Rd4#
    • 1...Rd4
      • 2.Rxd4#
    • 1...Bd3
      • 2.Rd4#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Qb5#
      • 1...Rc1
        • 2.Rd4#
      • 1...Bd3
        • 2.Rd4#
      • 1...Sb3
        • 2.Qb7#
      • 1...Sc6
        • 2.Qe6#
      • 1...Sb7
        • 2.Qxb7#
      • 1...Qf1!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qe6#
      • 1...Ke4
        • 2.Qf5#
      • 1...Rxd4
        • 2.Rxd4#
      • 1...Qe4
        • 2.Qb5#
      • 1...Bf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::R1(B)
    • R(b);N_GUARD::R1(B),XR(b)
    • B(a);S_CUTR(b)::R1(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR2(E)
      • Vars
        • R(b);N_GUARD::R1(B)
        • B(a);S_CUTR(b)::R1(B)
        • S(f);N_GUARD::QAB(E)
        • S(f);SBLOCK::QAB1(E)
        • S(f);N_GUARD::QAB(E),XS(f)
      • Refutation
        • Q(c);
  • Actual
    • S(A);
    • Threat
      • QAB1(E)
    • Vars
      • K(g);N_SPINP(h),S_FLIGHT::QAB1(E)
      • R(b);OGATE,XS(A)::R1(B),XR(b)
      • Q(c);SBLOCK::QAR2(E)
      • B(a);N_GUARD::QAR2(E),XB(a)
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