MESON Chess Problem Database

Problem Display
PID: 117440 (3n4/1pRppp2/1PP2p2/n1pkPQ2/N7/1pP5/1P2B1K1/8 w - - 0 1)

Loewenton, Leon

Arbejder-Skak, 1962

3n4/1pRppp2/1PP2p2/n1pkPQ2/N7/1pP5/1P2B1K1/8

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Bf3#
    • 1...Saxc6
      • 2.Rxd7#
    • 1...Sdxc6
      • 2.Rxd7#
    • 1...c4
      • 2.Bf3#
    • 1...bxc6
      • 2.Rxd7#
    • 1...dxc6
      • 2.Rd7#
    • 1...d6
      • 2.e6#
  • Tries
    • 1.Bb5?
      • threat
        • 2.Rxd7#
      • 1...dxc6
        • 2.Rd7#
      • 1...d6
        • 2.e6#
      • 1...Sc4!
    • 1.Qe4+?
      • 1...Ke6
        • 2.Sxc5#
      • 1...Kxe4!
    • 1.c4+?
      • 1...Kd4
        • 2.Qf4#
      • 1...Sxc4!
  • Keys
    • 1.Bd3!
      • 1...Saxc6
        • 2.Rxd7#
      • 1...Sdxc6
        • 2.Rxd7#
      • 1...fxe5
        • 2.Qxd7#
      • 1...bxc6
        • 2.Rxd7#
      • 1...dxc6
        • 2.Rd7#
      • 1...Se6
        • 2.Qe4#
      • 1...Sc4
        • 2.Be4#
      • 1...c4
        • 2.Be4#
      • 1...d6
        • 2.e6#
      • 1...e6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::B(B)
    • S(b);SBLOCK,XP(I)::R(J),XP(g)
    • S(j);SBLOCK,XP(I)::R(J),XP(g)
    • P(c);SBLOCK::B(B)
    • P(f);SBLOCK,XP(I)::R(J),XP(g)
    • P(g);SBLOCK,XP(I)::R(J)
    • P(g);SBLOCK::QAR(G)+P(F)
  • Tries
    • Try
      • B(B);
      • Threat
        • R(J),XP(g)
      • Vars
        • P(g);XP(I)::R(J)
        • P(g);SBLOCK::QAR(G)+P(F)
      • Refutation
        • S(b);
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);S_FLIGHT::S(E),XP(c)
      • Refutation
        • K(d);S_FLIGHT,XQ(G)
    • Try
      • P(D);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR2(G)
      • Refutation
        • S(b);XP(D)
  • Actual
    • B(B);
    • Vars
      • S(b);SBLOCK,XP(I)::R(J),XP(g)
      • S(j);SBLOCK,XP(I)::R(J),XP(g)
      • P(e);P_SPINP(e),SBLOCK,XP(F)::QAR2(G),XP(g)
      • P(f);SBLOCK,XP(I)::R(J),XP(g)
      • P(g);SBLOCK,XP(I)::R(J)
      • S(j);SBLOCK::QAB1(G)
      • S(b);SBLOCK::B(B)
      • P(c);SBLOCK::B(B)
      • P(g);SBLOCK::QAR(G)+P(F)
      • P(h);SBLOCK::QAB1(G)
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