MESON Chess Problem Database

Problem Display
PID: 268482 (2Q2r1B/5nq1/3p2p1/K2NR3/1p1kBR2/2pp1n2/6N1/2b2r2 w - - 0 1)

Cristoffanini, Guido

Die Schwalbe, 1931

2Q2r1B/5nq1/3p2p1/K2NR3/1p1kBR2/2pp1n2/6N1/2b2r2

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Bxg7#
    • 1...b3
      • 2.Qxc3#
  • Tries
    • 1.Sxc3?
      • threat
        • 2.Rd5#
      • 1...Qxe5+
        • 2.Sb5#
      • 1...Kxe5
        • 2.Bxg7#
      • 1...S3xe5
        • 2.Sb5#
      • 1...S7xe5
        • 2.Sb5#
      • 1...dxe5
        • 2.Sb5#
      • 1...d5
        • 2.Rxd5#
      • 1...Rxc8!
    • 1.Bxf3+?
      • 1...Kxe5
        • 2.Bxg7#
      • 1...Bxf4!
    • 1.Bf5+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...Bxf4!
    • 1.Bxg6+?
      • 1...Kxe5
        • 2.Qf5#
      • 1...Bxf4!
  • Keys
    • 1.Sde3!
      • threat
        • 2.Rd5#
      • 1...Qxe5+
        • 2.Bd5#
      • 1...Kxe5
        • 2.Bxg7#
      • 1...S3xe5
        • 2.Bf3#
      • 1...S7xe5
        • 2.Bf5#
      • 1...dxe5
        • 2.Qc4#
      • 1...d5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(g);OGATEB,P_SPINQ(k),S_FLIGHT,XR(F)::B(H),XQ(k)
    • P(f);N_GUARD::QAB1(G),XP(c)
  • Tries
    • Try
      • S(E);XP(c)
      • Threat
        • R1(F)
      • Vars
        • Q(k);CHECK,P_SPINQ(k),XR(F)::S(E)
        • K(g);OGATEB,P_SPINQ(k),S_FLIGHT,XR(F)::B(H),XQ(k)
        • S(e);SBLOCK,XR(F)::S(E)
        • S(j);SBLOCK,XR(F)::S(E)
        • P(h);SBLOCK,XR(F)::S(E)
        • P(h);::R1(F),XP(h)
      • Refutation
        • R(l);XQ(G)
    • Try
      • B(B);CHECK,XS(e)
      • Vars
        • K(g);P_SPINQ(k),S_CUTB(a),S_FLIGHT,XR(F)::B(H),XQ(k)
      • Refutation
        • B(a);XR(C)
    • Try
      • B(B);CHECK
      • Vars
        • K(g);N_GUARD,P_SPINQ(k),S_CUTB(a),S_FLIGHT,XR(F)::QAR1(G)
      • Refutation
        • B(a);XR(C)
    • Try
      • B(B);CHECK,XP(i)
      • Vars
        • K(g);N_GUARD,P_SPINQ(k),S_CUTB(a),S_FLIGHT,XR(F)::QAR1(G)
      • Refutation
        • B(a);XR(C)
  • Actual
    • S(E);
    • Threat
      • R1(F)
    • Vars
      • Q(k);CHECK,P_SPINQ(k),XR(F)::R(C)+B(B)
      • K(g);OGATEB,P_SPINQ(k),S_FLIGHT,XR(F)::B(H),XQ(k)
      • S(e);SBLOCK,XR(F)::R(C)+B(B)
      • S(j);SBLOCK,XR(F)::R(C)+B(B)
      • P(h);SBLOCK,XR(F)::QAR1(G)
      • P(h);::R1(F),XP(h)
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