MESON Chess Problem Database

Problem Display
PID: 37640 (B3QR2/B5Pp/1K2N3/3N2P1/1p1Pk1p1/p2b2rp/2n3pb/n1qRr3 w - - 0 1)

Stuart Green, G

Comm., BCF 013. Ty., 1933-1934

B3QR2/B5Pp/1K2N3/3N2P1/1p1Pk1p1/p2b2rp/2n3pb/n1qRr3

#2

11 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Rf4#
    • 1...Qe3
      • 2.Sc3#
      • 2.Sxb4#
      • 2.Sdf4#
      • 2.Sdc7#
      • 2.Se7#
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qb1
      • 2.Rf4#
    • 1...Qxd1
      • 2.Rf4#
    • 1...Ree3
      • 2.Sc3#
      • 2.Sxb4#
      • 2.Sdf4#
      • 2.Sdc7#
      • 2.Se7#
      • 2.Rf4#
    • 1...Rge3
      • 2.Sc3#
      • 2.Sxb4#
      • 2.Sdf4#
      • 2.Sdc7#
      • 2.Se7#
    • 1...Bf1
      • 2.Sc5#
      • 2.Sec7#
      • 2.Sd8#
    • 1...Be2
      • 2.Sc5#
      • 2.Sec7#
      • 2.Sd8#
    • 1...Bc4
      • 2.Sc5#
      • 2.Sec7#
      • 2.Sd8#
    • 1...Bb5
      • 2.Sc5#
    • 1...Ba6
      • 2.Sc5#
      • 2.Sec7#
      • 2.Sd8#
    • 1...Se3
      • 2.Sc3#
      • 2.Rf4#
    • 1...Sxd4
      • 2.Sc5#
    • 1...h5
      • 2.Qg6#
    • 1...h6
      • 2.Qg6#
  • Tries
    • 1.Ka5?
      • threat
        • 2.Sec7#
        • 2.Sd8#
      • 1...Qxg5
        • 2.Sxg5#
      • 1...Sxd4
        • 2.Sxd4#
        • 2.Sc5#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Rge3
        • 2.Sc3#
        • 2.Sxb4#
        • 2.Sdf4#
        • 2.Sb6#
        • 2.Sdc7#
        • 2.Se7#
      • 1...Rf3
        • 2.Sef4#
      • 1...Bb5
        • 2.Sc5#
      • 1...Sb3+!
    • 1.Sf6+?
      • 1...Kf5
        • 2.Se4#
        • 2.Sh5#
        • 2.Sd7#
        • 2.Sxh7#
        • 2.Sg8#
      • 1...Ke3!
  • Keys
    • 1.Kc7!
      • threat
        • 2.Sd8#
      • 1...Qf4+
        • 2.Rxf4#
      • 1...Rge3+
        • 2.Sdf4#
      • 1...Rf3+
        • 2.Sef4#
      • 1...Se3+
        • 2.Sc3#
      • 1...Sxd4+
        • 2.Sc5#
      • 1...Qxg5
        • 2.Sxg5#
      • 1...Bb5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(b);N_GUARD::R1(K)
    • Q(b);N_GUARD::R1(K),XQ(b)
    • Q(b);N_GUARD,XR(A)::R1(K)
    • B(h);::QAR(J)+S(F),DCHECK
    • S(d);SBLOCK,XP(B)::QAR(J)+S(F),DCHECK
    • P(n);N_GUARD::QAB(J)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);P_PINS(C),XP(D)::QAR(J)+S(F),DCHECK,XQ(b)
        • Q(b);N_GUARD::R1(K),XQ(b)
        • R(i);SBLOCK::QAR(J)+S(F)
        • B(h);::QAR(J)+S(F),DCHECK
      • Refutation
        • S(a);CHECK
    • Try
      • S(C);CHECK
      • Refutation
        • K(l);P-FLIGHT
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • QAR(J)+S(F)
    • Vars
      • Q(b);CHECK,N_GUARD::R1(K),XQ(b)
      • R(i);CHECK,SBLOCK::B(I)+S(C)
      • R(i);CHECK,SBLOCK::QAR(J)+S(F)
      • S(d);CHECK,SBLOCK::B(I)+S(C),DCHECK
      • S(d);CHECK,SBLOCK,XP(B)::QAR(J)+S(F),DCHECK
      • Q(b);XP(D)::QAR(J)+S(F),DCHECK,XQ(b)
      • B(h);::QAR(J)+S(F),DCHECK
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