MESON Chess Problem Database

Problem Display
PID: 182828 (1n5B/Q2P4/1Np1R3/1pP1pP2/1r1k2NK/6Pp/1R2P1B1/8 w - - 0 1)

Bosma, Rinke

3rd Prize, Belliboni-Faria Festival, 1989

1n5B/Q2P4/1Np1R3/1pP1pP2/1r1k2NK/6Pp/1R2P1B1/8

#2

13 + 7

1077 Boletim da UBP 1990

SOLUTION

  • SOUND
  • Tries
    • 1.Rd2+?
      • 1...Kxc5
        • 2.Rxe5#
      • 1...Kc3!
    • 1.Rxb4+?
      • 1...Kxc5
        • 2.Sd5#
      • 1...Kc3!
    • 1.Rxe5?
      • threat
        • 2.Rd5#
      • 1...Kc3
        • 2.Re3#
      • 1...hxg2!
    • 1.Qa3?
      • threat
        • 2.Qxb4#
        • 2.Qe3#
      • 1...Rxb2
        • 2.Bxe5#
        • 2.Rd6#
        • 2.Qe3#
        • 2.e3#
      • 1...Rb3
        • 2.Bxe5#
      • 1...Ra4
        • 2.Bxe5#
        • 2.Rd2#
        • 2.Rd6#
        • 2.Qe3#
        • 2.e3#
      • 1...Rc4
        • 2.Bxe5#
        • 2.Rd2#
        • 2.Rd6#
        • 2.Qe3#
        • 2.e3#
      • 1...Sa6
        • 2.Qe3#
      • 1...Kxc5!
    • 1.d8Q+?
      • 1...Kc3
        • 2.Qd2#
      • 1...Kxc5
        • 2.Rxe5#
        • 2.Qae7#
        • 2.Qd6#
      • 1...Sd7!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Sd3#
      • 1...Kc3+
        • 2.Sec4#
      • 1...Ke3+
        • 2.Sg4#
      • 1...Kxc5+
        • 2.Sbc4#
      • 1...Sxd7
        • 2.Sexd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(c);N_SPINP(e),P_PINS(E),S_FLIGHT,XP(G)::R(J),XP(e)
      • Refutation
        • K(c);P_PINS(E),S_FLIGHT
    • Try
      • R(A);CHECK,XR(b)
      • Vars
        • K(c);N_SPINP(e),S_FLIGHT,XP(G)::QAB(K)+S(I)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(J);XP(e)
      • Threat
        • B(M)+R(J),DCHECK
      • Vars
        • K(c);P_PINS(E),S_FLIGHT::B(M)+R(J),DCHECK
      • Refutation
        • P(a);XB(C)
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::B(M),XP(e)
        • S(g);::QAB1(K)
      • Refutation
        • K(c);N_SPINP(e),P_PINS(E),P_SPINR(b),S_FLIGHT,XP(G)
    • Try
      • P(L);CHECK
      • Vars
        • K(c);OGATE,P_PINS(E),S_FLIGHT::QAB1(L)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • S(E);XP(e)
    • Threat
      • B(M)+S(E)
    • Vars
      • K(c);CHECK,S_FLIGHT::B(M)+S(E)
      • K(c);CHECK,S_FLIGHT::R(J)+S(E),DCHECK
      • K(c);CHECK,S_FLIGHT,XP(G)::QAB(K)+S(I)
      • S(g);XP(L)::B(M)+S(E),XS(g)
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