MESON Chess Problem Database

Problem Display
PID: 207003 (N1r2B2/qn1B3b/1p6/1p1k4/2R2P1K/8/4P3/5Q2 w - - 0 1)

Capraez, Friedrich

Sissa, 1860

N1r2B2/qn1B3b/1p6/1p1k4/2R2P1K/8/4P3/5Q2

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Sxb6#
    • 1...Qa1
      • 2.Sxb6#
    • 1...Qa2
      • 2.Sxb6#
    • 1...Qa3
      • 2.Sxb6#
    • 1...Qa4
      • 2.Sxb6#
    • 1...Bg8
      • 2.e4#
  • Tries
    • 1.Qg2+?
      • 1...Be4
        • 2.Qxe4#
        • 2.Qg8#
      • 1...Kxc4!
    • 1.Qd1+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kxc4!
    • 1.Qh1+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kxc4!
    • 1.Qf3+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kxc4!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Rd4#
        • 2.Qd4#
      • 1...Kxc4
        • 2.Be6#
      • 1...Qxa1
        • 2.Sxb6#
      • 1...Rxc4
        • 2.Qe5#
      • 1...Rxf8
        • 2.Qd4#
      • 1...bxc4
        • 2.Qe5#
      • 1...Qa4
        • 2.Sxb6#
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(d);N_GUARD::S(G),XP(c)
    • B(f);N_GUARD::P(B)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR2(A),XB(f)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(A),XB(f)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(A),XB(f)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT,XR(C)::B(F)
      • Q(d);N_GUARD,XQ(A)::S(G),XP(c)
      • R(g);P_PINP(D),SBLOCK,XR(C)::QAR1(A)
      • R(g);XB(H)::QAR1(A)
      • P(a);SBLOCK,XR(C)::QAR1(A)
      • S(e);::QAR1(A)
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