MESON Chess Problem Database

Problem Display
PID: 89252 (2n5/5K2/2p3Np/2BRpN2/4k1nP/1B3bQ1/4p1pP/5rr1 w - - 0 1)

Tinebra, Vincenzo

The Problemist, 1991

2n5/5K2/2p3Np/2BRpN2/4k1nP/1B3bQ1/4p1pP/5rr1

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qf4#
    • 1...Sf2
      • 2.Qxe5#
    • 1...Sxh2
      • 2.Qxe5#
    • 1...Se3
      • 2.Qxe5#
    • 1...Sf6
      • 2.Qxe5#
    • 1...Sb6
      • 2.Sd6#
    • 1...Sd6+
      • 2.Sxd6#
    • 1...Sa7
      • 2.Sd6#
    • 1...Se7
      • 2.Sd6#
    • 1...cxd5
      • 2.Bc2#
  • Tries
    • 1.Rd4+?
      • 1...Kxf5
        • 2.Be6#
      • 1...exd4!
    • 1.Qe1?
      • threat
        • 2.Sg3#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...cxd5
        • 2.Bc2#
      • 1...Kxf5!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Sg3#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...Kxf5
        • 2.Bc2#
      • 1...cxd5
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • K(f);P_SPINP(h),S_FLIGHT,XS(G)::QAR1(C)
    • S(g);N_GUARD::QAR1(C),XP(h)
    • S(g);N_GUARD,XP(A)::QAR1(C),XP(h)
    • S(k);N_GUARD::S(G)
    • S(k);CHECK,N_GUARD::S(G),XS(k)
    • P(i);SBLOCK,XR(F)::B(B)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(f);S_FLIGHT,XS(G)::B(B)
      • Refutation
        • P(h);XR(F)
    • Try
      • Q(C);P_PINP(c)
      • Threat
        • S(G)
      • Vars
        • S(k);CHECK,N_GUARD::S(G),XS(k)
        • P(i);SBLOCK,XR(F)::B(B)
      • Refutation
        • K(f);N_SPINP(c),P_SPINP(h),S_FLIGHT,XS(G)
  • Actual
    • Q(C);
    • Threat
      • S(G)
    • Vars
      • S(k);CHECK,N_GUARD::S(G),XS(k)
      • K(f);P_SPINB(e),P_SPINP(h),S_FLIGHT,XS(G)::B(B)
      • P(i);SBLOCK,XR(F)::B(B)
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