MESON Chess Problem Database

Problem Display
PID: 73806 (r7/1R1p2bb/8/2p1p3/p5Q1/2p3n1/PPk1PP2/R3K3 w - - 0 1)

Rothwell, Stephen

Freie Presse, 1993

r7/1R1p2bb/8/2p1p3/p5Q1/2p3n1/PPk1PP2/R3K3

#2

8 + 10

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.Qxa4#
    • 1...Rc8
      • 2.Qxa4#
    • 1...Rd8
      • 2.Qxa4#
    • 1...Re8
      • 2.Qxa4#
    • 1...Rf8
      • 2.Qxa4#
    • 1...Rg8
      • 2.Qxa4#
    • 1...Rh8
      • 2.Qxa4#
    • 1...Sxe2
      • 2.Qxe2#
    • 1...Sf5
      • 2.Qe4#
    • 1...cxb2
      • 2.Qc4#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Qxc3#
      • 1...Sxe2
        • 2.Qxe2#
      • 1...Se4
        • 2.Qd3#
      • 1...e4!
    • 1.Qg5?
      • threat
        • 2.Rc1#
        • 2.Qc1#
      • 1...cxb2
        • 2.Qd2#
      • 1...Bh6
        • 2.Rc1#
      • 1...Sxe2!
    • 1.e3?
      • threat
        • 2.Qd1#
      • 1...cxb2
        • 2.Qc4#
      • 1...Se2
        • 2.Qxe2#
      • 1...Kd3!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Qd1#
      • 1...cxb2
        • 2.Qd2#
      • 1...Rd8
        • 2.Qxa4#
      • 1...Bd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(j);N_GUARD::QAB(G),XP(d)
    • S(c);OGATE,XP(E)::QAR2(G),XS(c)
    • S(c);N_GUARD,S_CUTB(i)::QAB(G)
    • P(b);OGATEB,XP(D)::QAR2(G)
  • Tries
    • Try
      • Q(G);P_PINP(b)
      • Threat
        • QAR1(G),XP(b)
      • Vars
        • S(c);OGATE,XP(E)::QAR2(G),XS(c)
        • S(c);S_CUTB(i)::QAB1(G)
      • Refutation
        • P(f);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);N_GUARD,XP(D)::QAR1(G)
        • B(h);::R1(A)
      • Refutation
        • S(c);XP(E)
    • Try
      • P(E);
      • Threat
        • QAB1(G)
      • Vars
        • P(b);OGATEB,XP(D)::QAR2(G)
        • S(c);N_GUARD::QAR2(G),XS(c)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);XP(g)
    • Threat
      • QAB1(G)
    • Vars
      • P(b);N_GUARD,XP(D)::QAR1(G)
      • R(j);N_GUARD::QAB(G),XP(d)
      • B(i);N_GUARD::QAB1(G),XB(i)
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