MESON Chess Problem Database

Problem Display
PID: 96970 (B2Nn2n/K2p4/5ppb/R1B1k3/4N2Q/7p/5Rpq/3r4 w - - 0 1)

Groeneveld, Cornelis

Problemas, 1994

B2Nn2n/K2p4/5ppb/R1B1k3/4N2Q/7p/5Rpq/3r4

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Bd6#
    • 1...Sd6
      • 2.Qxf6#
    • 1...Sc7
      • 2.Qxf6#
    • 1...Sg7
      • 2.Qxf6#
    • 1...f5
      • 2.Qe7#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qe4#
      • 1...Re1
        • 2.Qd4#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Sd6
        • 2.Bd4#
        • 2.Qxf6#
      • 1...f5
        • 2.Qe7#
      • 1...d5!
    • 1.Be3+?
      • 1...Rd5
        • 2.Rxd5#
      • 1...d5!
    • 1.Bb6+?
      • 1...Rd5
        • 2.Rxd5#
      • 1...d5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qe4#
      • 1...Qf4
        • 2.Qxf4#
      • 1...f5
        • 2.Sf3#
      • 1...Re1
        • 2.Qd4#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Sd6
        • 2.Bd4#
      • 1...d5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);SBLOCK::R(D)+B(E),DCHECK
    • S(j);N_GUARD::QAB1(C),XP(f)
    • P(f);OGATE::QAR2(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • R(a);N_GUARD::QAB1(C)
        • R(a);N_GUARD::QAB1(C),XR(a)
        • B(h);N_GUARD::QAB1(C),XB(h)
        • P(f);OGATE::QAR2(C)
      • Refutation
        • P(i);
    • Try
      • B(E);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::R1(D),XR(a)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • B(E);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::R1(D),XR(a)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • Q(c);N_GUARD::QAB1(C),XQ(c)
      • P(f);SBLOCK::S(B)
      • R(a);N_GUARD::QAB1(C)
      • R(a);N_GUARD::QAB1(C),XR(a)
      • S(j);SBLOCK::R(D)+B(E),DCHECK
      • P(i);N_GUARD,SBLOCK::S(H)
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