MESON Chess Problem Database

Problem Display
PID: 174814 (r1Br4/5n2/2p5/1p2PRp1/3pk1P1/NQP3K1/1P4p1/2N3B1 w - - 0 1)

Barth, Michael

Muller, Dieter

Prize, Olimpiya dunyasi, 2005

r1Br4/5n2/2p5/1p2PRp1/3pk1P1/NQP3K1/1P4p1/2N3B1

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sc5#
      • 1...Kxd3
        • 2.Qc2#
      • 1...c5
        • 2.Sxc5#
      • 1...Rd5!
    • 1.Rf2?
      • threat
        • 2.Re2#
      • 1...Ke3
        • 2.Re2#
      • 1...Kxe5
        • 2.Qe6#
      • 1...d3!
    • 1.Rf4+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...gxf4+!
    • 1.Qd1?
      • threat
        • 2.Qf3#
      • 1...Kd5
        • 2.Qxd4#
      • 1...Sxe5!
    • 1.Qc2+?
      • 1...d3
        • 2.Qxg2#
      • 1...Kd5!
    • 1.cxd4?
      • threat
        • 2.Qf3#
      • 1...Sxe5
        • 2.Rxe5#
      • 1...Rxa3!
  • Keys
    • 1.Sb1!
      • threat
        • 2.Sd2#
      • 1...dxc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(A)::QAB1(E)
        • P(f);::S(A),XP(f)
      • Refutation
        • R(i);
    • Try
      • R(J);
      • Threat
        • R(J)
      • Vars
        • K(c);P-FLIGHT::B(B)+R(J),DCHECK
        • K(c);OGATEB,P-FLIGHT,XP(I)::QAR1(E)
      • Refutation
        • P(b);
    • Try
      • R(J);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(I)::QAR1(E)
      • Refutation
        • P(e);CHECK,XR(J)
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • S(g);XP(I)
    • Try
      • Q(E);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB(E),XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(F);XP(b)
      • Threat
        • QAB1(E)
      • Vars
        • S(g);OGATE,XP(I)::R1(J),XS(g)
      • Refutation
        • R(h);P_PINQ(E),XS(D)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • P(b);XP(F)::S(D),XP(b)
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