MESON Chess Problem Database

Problem Display
PID: 76244 (1K6/8/1Bp2p2/1p1P4/1P3Q2/1Nk3bR/PppR1Nnq/1rn2B2 w - - 0 1)

Heyl, Peter

Troll, 2005

1K6/8/1Bp2p2/1p1P4/1P3Q2/1Nk3bR/PppR1Nnq/1rn2B2

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sxa2
      • 2.Rd3#
    • 1...Se2
      • 2.Rd3#
    • 1...Sxb3
      • 2.Rd3#
    • 1...Sd3
      • 2.Rxd3#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Se4#
      • 1...Sxa2
        • 2.Rd3#
      • 1...Se2
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...f5
        • 2.Qe5#
      • 1...cxd5!
    • 1.Rd4?
      • threat
        • 2.Se4#
      • 1...Sxa2
        • 2.Rd3#
      • 1...cxd5
        • 2.Qc7#
      • 1...f5!
    • 1.Rxg3+?
      • 1...Sd3
        • 2.Rdxd3#
        • 2.Rgxd3#
        • 2.Qd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Qxg3!
  • Keys
    • 1.Ba5!
      • threat
        • 2.Se4#
      • 1...Sxa2
        • 2.Rd3#
      • 1...cxd5
        • 2.Qc7#
      • 1...Se2
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD,XP(B)::R1(C)
    • S(b);N_GUARD::R1(C)
    • S(b);N_GUARD,XS(E)::R1(C)
    • S(b);N_GUARD,N_SPINB(h)::R1(C),XS(b)
  • Tries
    • Try
      • B(J);
      • Threat
        • S(D)
      • Vars
        • S(b);N_GUARD,XP(B)::R1(C)
        • S(b);N_GUARD::R1(C)
        • S(b);N_GUARD,N_SPINB(h)::R1(C),XS(b)
        • P(k);N_GUARD::QAB(H)
      • Refutation
        • P(j);XP(I)
    • Try
      • R(C);
      • Threat
        • S(D)
      • Vars
        • S(b);N_GUARD,XP(B)::R1(C)
        • P(j);XP(I)::QAR(H)
      • Refutation
        • P(k);
    • Try
      • R(F);CHECK,N_SPINQ(H),XB(h)
      • Vars
        • S(e);P_SPINS(e)::QAB1(H)
      • Refutation
        • Q(f);P_PINQ(H),XR(F)
  • Actual
    • B(J);
    • Threat
      • S(D)
    • Vars
      • S(b);N_GUARD,XP(B)::R1(C)
      • P(j);XP(I)::QAR(H)
      • S(b);N_GUARD::R1(C)
      • S(b);N_GUARD,N_SPINB(h)::R1(C),XS(b)
      • P(k);N_GUARD::QAB(H)
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