MESON Chess Problem Database

Problem Display
PID: 136693 (Q7/3p4/8/3R3P/4kpPR/1p2pbp1/1p2p1N1/3nN1KB w - - 0 1)

Shire, David J

British Chess Magazine, 2010

Q7/3p4/8/3R3P/4kpPR/1p2pbp1/1p2p1N1/3nN1KB

#2

9 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Sxf4?
      • threat
        • 2.Qa4#
      • 1...Kxf4
        • 2.Rf5#
      • 1...Sc3!
    • 1.Rxd1+?
      • 1...d5
        • 2.Qxd5#
        • 2.Qe8#
      • 1...Ke5!
    • 1.Rd2+?
      • 1...d5
        • 2.Qxd5#
        • 2.Qe8#
      • 1...Ke5!
    • 1.Rd3+?
      • 1...d5
        • 2.Qxd5#
        • 2.Qe8#
      • 1...Ke5!
    • 1.Ra5+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kd4!
    • 1.Rb5+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kd4!
    • 1.Rc5+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kd4!
    • 1.Rf5+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kd4!
    • 1.Rg5+?
      • 1...d5
        • 2.Qxd5#
      • 1...Kd4!
    • 1.Qa6?
      • threat
        • 2.Qd3#
        • 2.Qc4#
      • 1...b1Q
        • 2.Qc4#
      • 1...b1B
        • 2.Qc4#
      • 1...Sf2
        • 2.Qc4#
      • 1...Kxd5!
    • 1.Qh8?
      • threat
        • 2.Rd4#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Bxg4
        • 2.Qd4#
        • 2.Qe5#
      • 1...d6
        • 2.Rd4#
        • 2.Qd4#
      • 1...Kxd5!
    • 1.g5?
      • threat
        • 2.Rxf4#
      • 1...Bxg2
        • 2.Bxg2#
      • 1...Bg4!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Qe8#
      • 1...Kxe3
        • 2.Rd3#
      • 1...Sxe3
        • 2.Bxf3#
      • 1...fxe3
        • 2.g5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);P_PINB(f),XP(i)
      • Threat
        • QAR(I)
      • Vars
        • K(h);N_SPINB(f),P-FLIGHT,XS(D)::R1(G)
      • Refutation
        • S(a);
    • Try
      • R(G);CHECK,XS(a)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • P(j);P_SPINP(j)::QAB1(I),XP(j)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • P(j);P_SPINP(j)::QAB1(I),XP(j)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • P(j);P_SPINP(j)::QAB1(I),XP(j)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • P(j);P_SPINP(j)::QAB1(I),XP(j)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • P(j);P_SPINP(j)::QAB1(I),XP(j)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR2(I)
        • S(a);::QAR2(I)
      • Refutation
        • K(h);S_FLIGHT,XR(G)
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Refutation
        • K(h);S_FLIGHT,XR(G)
    • Try
      • P(E);P_PINP(i)
      • Threat
        • R1(F),XP(i)
      • Vars
        • B(f);OGATE,P_SPINB(f),XS(D)::B(C),XB(f)
      • Refutation
        • B(f);N_SPINP(i)
  • Actual
    • S(D);P_PINB(f),XP(e)
    • Threat
      • QAR(I)
    • Vars
      • K(h);N_SPINB(f),P-FLIGHT,XS(D)::R1(G)
      • S(a);SBLOCK,XS(D)::B(C),XB(f)
      • P(i);SBLOCK,XS(D)::R(F)+P(E)
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