MESON Chess Problem Database

Problem Display
PID: 58570 (3n1B2/2N5/1p1R1P1b/2k1rpQK/R2p4/8/2B5/8 w - - 0 1)

Eaton, Vincent Lanius

The Chess Review, 1936

3n1B2/2N5/1p1R1P1b/2k1rpQK/R2p4/8/2B5/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg5
      • 2.Re6#
    • 1...Sc6
      • 2.Rd5#
    • 1...f4
      • 2.Qxe5#
    • 1...b5
      • 2.Sa6#
  • Tries
    • 1.Rdxd4+?
      • 1...Re7
        • 2.Rac4#
      • 1...Bxf8
        • 2.Rac4#
      • 1...Kc6!
    • 1.Qd2?
      • threat
        • 2.Qb4#
        • 2.Qxd4#
      • 1...Bxd2
        • 2.Re6#
      • 1...Re4
        • 2.Qb4#
      • 1...Rd5
        • 2.Qb4#
      • 1...Be3
        • 2.Re6#
        • 2.Qb4#
      • 1...Sc6
        • 2.Rd5#
      • 1...Se6
        • 2.Qb4#
      • 1...d3
        • 2.Qc3#
        • 2.Qb4#
      • 1...f4+!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qa3#
      • 1...f4+
        • 2.Bf5#
      • 1...Bxc1
        • 2.Re6#
      • 1...Re3
        • 2.Bd3#
      • 1...Bd2
        • 2.Re6#
      • 1...Sc6
        • 2.Rd5#
      • 1...b5
        • 2.Sa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD,XQ(C)::B(H)+R(E)
    • S(g);SBLOCK::B(H)+R(E),DCHECK
    • P(d);OGATE,P_PINQ(C),P_SPINR(c)::QAR2(C),XR(c)
    • P(e);SBLOCK::S(G)
  • Tries
    • Try
      • R(E);CHECK,XP(a)
      • Vars
        • R(c);P_SPINP(d),P_SPINR(c)::R1(B)
        • B(f);XB(H)::R1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);N_GUARD,XQ(C)::B(H)+R(E)
        • R(c);::QAB1(C)
        • S(g);SBLOCK::B(H)+R(E),DCHECK
        • S(g);::QAB1(C)
      • Refutation
        • P(d);CHECK
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • P(d);CHECK,S_CUTB(f)::QAR(C)+B(A)
      • B(f);N_GUARD,XQ(C)::B(H)+R(E)
      • R(c);S_CUTB(f)::QAR(C)+B(A)
      • B(f);N_GUARD::B(H)+R(E)
      • S(g);SBLOCK::B(H)+R(E),DCHECK
      • P(e);SBLOCK::S(G)
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