MESON Chess Problem Database

Problem Display
PID: 56016 (2Q5/bB3p2/8/3p3p/r3kN1K/1N2BR2/8/4R3 w - - 0 1)

Mansfield, Comins

2nd HM., Due Alfieri, 1978-1979

2Q5/bB3p2/8/3p3p/r3kN1K/1N2BR2/8/4R3

#2

8 + 6

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf3
      • 2.Sd2#
    • 1...Bxe3
      • 2.Rexe3#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qf5#
      • 1...Kxd3+
        • 2.Bd4#
      • 1...f5
        • 2.Qxf5#
      • 1...Kxf3+!
    • 1.Sxh5?
      • threat
        • 2.Qf5#
      • 1...Kd3+
        • 2.Bd4#
      • 1...Ke5+
        • 2.Bf4#
      • 1...f5
        • 2.Qxf5#
      • 1...Kxf3+!
    • 1.Bc1+?
      • 1...Be3
        • 2.Rexe3#
      • 1...Kxf3!
    • 1.Bg1+?
      • 1...Be3
        • 2.Rexe3#
      • 1...Kxf3!
    • 1.Bd2+?
      • 1...Be3
        • 2.Rexe3#
      • 1...Kxf3!
    • 1.Bf2+?
      • 1...Be3
        • 2.Rexe3#
      • 1...Kxf3!
    • 1.Qf5+?
      • 1...Kxf3
        • 2.Sd2#
      • 1...Kxf5!
    • 1.Qe6+?
      • 1...Kxf3
        • 2.Sd2#
        • 2.Rf1#
      • 1...fxe6!
    • 1.Qc2+?
      • 1...Kxf3
        • 2.Sd2#
        • 2.Qg2#
      • 1...Ke5!
    • 1.Qe8+?
      • 1...Kxf3
        • 2.Sd2#
        • 2.Rf1#
      • 1...Kf5!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Qf5#
      • 1...Kd3+
        • 2.Bd4#
      • 1...Kxf3+
        • 2.Sb4#
      • 1...Ke5+
        • 2.Bf4#
      • 1...f5
        • 2.Qxf5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(b);P_PINS(E),S_FLIGHT,XR(D)::S(B)
    • B(e);OGATE,P_SPINB(e),XB(C)::R1(A),XB(e)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(H)
      • Vars
        • K(b);CHECK,N_SPINP(c),S_FLIGHT,XS(E)::R(D)+B(C)
        • P(f);::QAB1(H),XP(f)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XR(D)
    • Try
      • S(E);XP(d)
      • Threat
        • QAB1(H)
      • Vars
        • K(b);CHECK,N_SPINP(c),S_FLIGHT::R(D)+B(C)
        • K(b);CHECK,N_SPINP(c),P-FLIGHT::R(A)+B(C),DCHECK
        • P(f);::QAB1(H),XP(f)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XR(D)
    • Try
      • B(C);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::R1(A),XB(e)
      • Refutation
        • K(b);P_PINS(E),S_FLIGHT,XR(D)
    • Try
      • B(C);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::R1(A),XB(e)
      • Refutation
        • K(b);P_PINS(E),S_FLIGHT,XR(D)
    • Try
      • B(C);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::R1(A),XB(e)
      • Refutation
        • K(b);P_PINS(E),S_FLIGHT,XR(D)
    • Try
      • B(C);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::R1(A),XB(e)
      • Refutation
        • K(b);P_PINS(E),S_FLIGHT,XR(D)
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);P_PINS(E),S_FLIGHT,XR(D)::S(B)
      • Refutation
        • K(b);N_SPINP(c),P_PINS(E),S_FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • P(f);XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(b);N_SPINP(c),P-FLIGHT,P_PINS(E)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(b);N_SPINP(c),P_PINS(E),S_FLIGHT
  • Actual
    • S(E);XP(c)
    • Threat
      • QAB1(H)
    • Vars
      • K(b);CHECK,S_FLIGHT::R(D)+B(C)
      • K(b);CHECK,S_FLIGHT,XR(D)::B(G)+S(E)
      • K(b);CHECK,P-FLIGHT::R(A)+B(C),DCHECK
      • P(f);::QAB1(H),XP(f)
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