MESON Chess Problem Database

Problem Display
PID: 886 (5b2/p3pPp1/Bp2R1P1/1KpPPPP1/2Npkp2/3R1N2/3P2Q1/8 w - c5 0 1)

Strydom, Jan

Sp. HM., British Chess Magazine, 1994

5b2/p3pPp1/Bp2R1P1/1KpPPPP1/2Npkp2/3R1N2/3P2Q1/8

#2

14 + 9

56 The Problemist 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Se1#
    • 1...Kxd5
      • 2.Bb7#
    • 1...Kxf5
      • 2.Sh4#
  • Tries
    • 1.Kc6?
      • 1...Kxd3
        • 2.Se1#
      • 1...Kxf5
        • 2.Sh4#
      • 1...b5!
    • 1.Se1+?
      • 1...f3
        • 2.Qxf3#
      • 1...Kxf5!
    • 1.Sxd4+?
      • 1...f3
        • 2.Qxf3#
      • 1...Kxd3!
    • 1.Sh4+?
      • 1...f3
        • 2.Qxf3#
      • 1...Kxd3!
    • 1.Sb2?
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxf5
        • 2.Sh4#
      • 1...c4!
    • 1.Sa3?
      • 1...Kxd3
        • 2.Se1#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxf5
        • 2.Sh4#
      • 1...c4!
    • 1.Sd6+?
      • 1...Kxd3
        • 2.Se1#
      • 1...Kxd5
        • 2.Bb7#
      • 1...exd6!
    • 1.Ra3?
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxf5
        • 2.Sh4#
      • 1...d3!
    • 1.Rb3?
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxf5
        • 2.Sh4#
      • 1...d3!
    • 1.Rxd4+?
      • 1...Kxf5
        • 2.Sh4#
        • 2.Qh3#
      • 1...cxd4!
    • 1.Rxe7?
      • 1...Kxd3
        • 2.Se1#
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxf5
        • 2.Sh4#
      • 1...Bxe7!
    • 1.Qf1?
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxf5!
    • 1.Qh3?
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxd3!
    • 1.Qe2+?
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxf5!
    • 1.Qg4?
      • 1...Kxd5
        • 2.Bb7#
      • 1...Kxd3!
  • Keys
    • 1.dxc5 ep!
      • 1...Kxd3
        • 2.Se1#
      • 1...Kd5
        • 2.Rxd4#
      • 1...Kxf5
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT,XR(C)::S(D)
    • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XP(G)::B(K)
    • K(b);S_FLIGHT,XP(I)::S(D)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT,XR(C)::S(D)
        • K(b);S_FLIGHT,XP(I)::S(D)
      • Refutation
        • P(e);
    • Try
      • S(D);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAB1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
    • Try
      • S(D);CHECK,XP(a)
      • Vars
        • P(c);P_SPINP(c)::QAB1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • S(D);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAB1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • S(E);
      • Vars
        • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XP(G)::B(K)
        • K(b);S_FLIGHT,XP(I)::S(D)
      • Refutation
        • P(d);
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT,XR(C)::S(D)
        • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XP(G)::B(K)
        • K(b);S_FLIGHT,XP(I)::S(D)
      • Refutation
        • P(d);
    • Try
      • S(E);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(C)::S(D)
        • K(b);P_SPINP(a),S_FLIGHT,XP(G)::B(K)
      • Refutation
        • P(g);XS(E)
    • Try
      • R(C);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(G)::B(K)
        • K(b);S_FLIGHT,XP(I)::S(D)
      • Refutation
        • P(a);
    • Try
      • R(C);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(G)::B(K)
        • K(b);S_FLIGHT,XP(I)::S(D)
      • Refutation
        • P(a);
    • Try
      • R(C);CHECK,XP(a)
      • Refutation
        • P(d);XR(C)
    • Try
      • R(L);XP(g)
      • Vars
        • K(b);S_FLIGHT,XR(C)::S(D)
        • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XP(G)::B(K)
        • K(b);S_FLIGHT,XP(I)::S(D)
      • Refutation
        • B(i);XR(L)
    • Try
      • Q(B);
      • Vars
        • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XP(G)::B(K)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
    • Try
      • Q(B);
      • Vars
        • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XP(G)::B(K)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XP(G)::B(K)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
    • Try
      • Q(B);P_PINP(c)
      • Vars
        • K(b);N_SPINP(c),OGATEB,P_SPINP(a),S_FLIGHT,XP(G)::B(K)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT,XR(C)
  • Actual
    • P(G);EP,XP(d)
    • Vars
      • K(b);S_FLIGHT,XR(C)::S(D)
      • K(b);P_SPINP(a),S_FLIGHT::R1(C),XP(a)
      • K(b);S_FLIGHT,XP(I)::S(D),XP(a)
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