MESON Chess Problem Database

Problem Display
PID: 87843 (2nK4/1qn5/1p1kb3/1r6/B2P4/N1Q2P2/5B2/4R3 w - - 0 1)

Tancau, Marcel

Buletin Problemistic, 1998-1999

2nK4/1qn5/1p1kb3/1r6/B2P4/N1Q2P2/5B2/4R3

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qxc7#
    • 1...Rd5
      • 2.Sc4#
    • 1...Bd5
      • 2.Bg3#
    • 1...Sd5
      • 2.Sxb5#
  • Tries
    • 1.Sxb5+?
      • 1...Kd5
        • 2.Bb3#
        • 2.Re5#
      • 1...Sxb5!
    • 1.Bg3+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Re5!
    • 1.Qxc7+?
      • 1...Kd5
        • 2.Re5#
      • 1...Qxc7+!
  • Keys
    • 1.d5!
      • threat
        • 2.Qe5#
      • 1...Kxd5
        • 2.Rd1#
      • 1...Qxd5
        • 2.Qxc7#
      • 1...Rxd5
        • 2.Sc4#
      • 1...Bxd5
        • 2.Bg3#
      • 1...Sxd5
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(e);N_GUARD,SBLOCK::QAB1(D),XS(f)
    • R(a);SBLOCK,S_CUTB(d)::S(C)
    • B(d);SBLOCK,S_CUTR(a)::B(B)
    • S(f);N_GUARD,SBLOCK::S(C),XR(a)
  • Tries
    • Try
      • S(C);CHECK,XR(a)
      • Refutation
        • S(f);XS(C)
    • Try
      • B(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(D)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • Q(D);CHECK,XS(f)
      • Vars
        • K(c);P-FLIGHT::R1(A)
      • Refutation
        • Q(e);CHECK,XQ(D)
  • Actual
    • P(G);
    • Threat
      • QAB1(D)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(G)::R(A)
      • Q(e);N_GUARD,SBLOCK,XP(G)::QAB1(D),XS(f)
      • R(a);SBLOCK,XP(G)::S(C)
      • B(d);SBLOCK,XP(G)::B(B)
      • S(f);N_GUARD,SBLOCK,XP(G)::S(C),XR(a)
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