MESON Chess Problem Database

Problem Display
PID: 133699 (3N4/5b2/1r3P1n/2Qpk1K1/2ppPpp1/5p2/1n1NPP2/4R3 w - - 0 1)

Richter, Frank

1st Comm., Dresden Olympic Ty., 2008

3N4/5b2/1r3P1n/2Qpk1K1/2ppPpp1/5p2/1n1NPP2/4R3

#2

9 + 11

23 Die Schwalbe 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Qc7#
    • 1...Rb4
      • 2.Qc7#
    • 1...Rb5
      • 2.Qc7#
    • 1...Re6
      • 2.Qxd5#
    • 1...Rb8
      • 2.Qc7#
    • 1...Bh5
      • 2.Qxd5#
    • 1...Bg6
      • 2.Qxd5#
    • 1...Be8
      • 2.Qxd5#
  • Tries
    • 1.Sxf3+?
      • 1...Kxe4
        • 2.Qxd4#
      • 1...gxf3!
    • 1.Sc6+?
      • 1...Ke6
        • 2.Qe7#
        • 2.Qxd5#
      • 1...Rxc6!
    • 1.Sxf7+?
      • 1...Ke6
        • 2.Qe7#
        • 2.Qxd5#
      • 1...Sxf7+!
    • 1.Qe7+?
      • 1...Re6
        • 2.Sc6#
      • 1...Be6!
    • 1.exd5?
      • threat
        • 2.exf3#
      • 1...fxe2
        • 2.Rxe2#
      • 1...Rb3
        • 2.Sc6#
      • 1...Bg6
        • 2.d6#
      • 1...Sd3
        • 2.exd3#
      • 1...Sf5
        • 2.Sxf7#
      • 1...Sd1!
  • Keys
    • 1.exf3!
      • threat
        • 2.exd5#
      • 1...Rb3
        • 2.Qc7#
      • 1...Bg6
        • 2.Qxd5#
      • 1...Sd1
        • 2.Sxc4#
      • 1...Sd3
        • 2.Sxc4#
      • 1...Sf5
        • 2.exf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(i);N_GUARD::QAB(F)
    • R(i);S_CUTB(k)::QAR1(F),XP(g)
    • B(k);N_GUARD::QAR1(F),XP(g)
  • Tries
    • Try
      • S(B);CHECK,XP(b)
      • Vars
        • K(h);N_SPINP(g),P-FLIGHT,XP(E)::QAR1(F),XP(d)
      • Refutation
        • P(f);XS(B)
    • Try
      • S(I);CHECK
      • Refutation
        • R(i);XS(I)
    • Try
      • S(I);CHECK,XB(k)
      • Refutation
        • S(j);CHECK,XS(I)
    • Try
      • Q(F);CHECK,N_PINP(g)
      • Vars
        • R(i);P_SPINR(i)::S(I)
      • Refutation
        • B(k);P_SPINB(k)
    • Try
      • P(E);XP(g)
      • Threat
        • R(A)+P(C),XP(b)
      • Vars
        • P(b);OGATE,P_SPINP(b),XP(C)::R(A),XP(b)
        • R(i);N_GUARD::S(I)
        • B(k);N_GUARD::QAR(F)+P(E)
        • S(a);OGATE::R(A)+P(C),XS(a)
        • S(j);N_GUARD::S(I),XB(k)
      • Refutation
        • S(a);
  • Actual
    • P(C);XP(b)
    • Threat
      • R(A)+P(E),XP(g)
    • Vars
      • R(i);N_GUARD::QAB(F)
      • B(k);N_GUARD::QAR1(F),XP(g)
      • S(a);N_GUARD::S(B),XP(c)
      • S(j);OGATE::R(A)+P(E),XS(j)
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