MESON Chess Problem Database

Problem Display
PID: 17951 (8/2q5/8/3BRb2/1p4N1/nQPk2K1/5Rn1/4bN2 w - - 0 1)

Mansfield, Comins

Il Due Mosse, 1952

8/2q5/8/3BRb2/1p4N1/nQPk2K1/5Rn1/4bN2

#2

8 + 7

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5+
      • 2.Sxe5#
    • 1...Bd2
      • 2.Rxd2#
    • 1...Bxf2+
      • 2.Sxf2#
    • 1...Bxc3
      • 2.Rd2#
    • 1...Be4
      • 2.Bxe4#
    • 1...Bxg4
      • 2.Be4#
    • 1...Be6
      • 2.Be4#
    • 1...Bd7
      • 2.Be4#
    • 1...Bc8
      • 2.Be4#
    • 1...Sf4
      • 2.Re3#
    • 1...Sb1
      • 2.Qc2#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sc4
      • 2.Qc2#
    • 1...Sb5
      • 2.Qc2#
  • Tries
    • 1.Bc4+?
      • 1...Sxc4
        • 2.Qc2#
      • 1...Qxc4!
    • 1.Qd1+?
      • 1...Bd2
        • 2.Qxd2#
      • 1...Kxc3!
    • 1.c4+?
      • 1...Bc3
        • 2.Rd2#
      • 1...Kd4!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Be2#
      • 1...Qxe5+
        • 2.Sxe5#
      • 1...Bxf2+
        • 2.Sxf2#
      • 1...Qxc3
        • 2.Rd5#
      • 1...Bxc3
        • 2.Rd2#
      • 1...Bxg4
        • 2.Be4#
      • 1...bxc3
        • 2.Qd5#
      • 1...Sf4
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(g);CHECK,XR(H)::S(F),XQ(g)
    • B(a);N_PINR(B),P_PINR(H)::R1(B),XB(a)
    • B(a);CHECK,P_PINR(H),XR(B)::S(F),XB(a)
    • B(a);N_PINR(B),P_PINR(H),P_SPINB(a),XP(D)::R1(B)
    • B(f);N_GUARD::B(G),XB(f)
    • B(f);N_GUARD,XS(F)::B(G)
    • B(f);N_GUARD::B(G)
    • S(b);OGATE::R1(H)
    • S(c);N_GUARD::QAB1(C)
    • S(c);N_GUARD::QAB1(C),XS(c)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • S(c);SBLOCK,XB(G)::QAB1(C)
      • Refutation
        • Q(g);XB(G)
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);N_GUARD,N_PINR(B),P_PINR(H),P_SPINB(a)::QAR1(C),XB(a)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • P(D);CHECK
      • Vars
        • B(a);N_PINR(B),P_PINR(H),P_SPINB(a)::R1(B)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • B(G);
    • Threat
      • B(G)
    • Vars
      • Q(g);CHECK,XR(H)::S(F),XQ(g)
      • B(a);CHECK,P_PINR(H),XR(B)::S(F),XB(a)
      • Q(g);OGATE,P_SPINQ(g),XP(D)::R(H)
      • B(a);N_PINR(B),P_PINR(H),P_SPINB(a),XP(D)::R1(B)
      • B(f);N_GUARD,XS(F)::B(G)
      • P(e);P_SPINP(e),SBLOCK,XP(D)::QAR2(C)
      • S(b);OGATE::R1(H)
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