MESON Chess Problem Database

Problem Display
PID: 61125 (2N5/1p6/1B6/p1rkNK2/5pp1/3p1q2/2RRQb2/8 w - - 0 1)

Kramarov, A

Loshinski, Lev Ilich

Shakhmatny Listok, 1928

2N5/1p6/1B6/p1rkNK2/5pp1/3p1q2/2RRQb2/8

#2

7 + 9

5314 Grossmeister Shakhmatnoi Kompozitsii 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4+
      • 2.Qxe4#
    • 1...Qg3
      • 2.Qe4#
    • 1...Qh3
      • 2.Qe4#
  • Tries
    • 1.Se7+?
      • 1...Kd4
        • 2.Bxc5#
        • 2.Rc4#
      • 1...Kd6!
    • 1.Bxc5?
      • threat
        • 2.Sb6#
        • 2.Se7#
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Bh4
        • 2.Sb6#
      • 1...b6
        • 2.Sxb6#
        • 2.Se7#
      • 1...Bxc5!
    • 1.Rxd3+?
      • 1...Bd4
        • 2.Rxc5#
      • 1...Qxd3+!
    • 1.Qxd3+?
      • 1...Bd4
        • 2.Rxc5#
        • 2.Qxd4#
      • 1...Qxd3+!
    • 1.Qxf3+?
      • 1...Kd4
        • 2.Bxc5#
        • 2.Rc4#
        • 2.Rxd3#
        • 2.Qe4#
        • 2.Qxd3#
      • 1...gxf3!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Sb4#
      • 1...Kd4+
        • 2.Qe5#
      • 1...Kc6+
        • 2.Se5#
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Qxd3+
        • 2.Qe4#
      • 1...Bd4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(c);CHECK,N_GUARD::QAB1(C),XQ(c)
    • Q(c);N_GUARD::QAB1(C)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(h);P-FLIGHT,P_PINS(D)
    • Try
      • B(F);XR(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,N_GUARD::QAB1(C),XQ(c)
        • B(a);::S(G)
      • Refutation
        • B(a);XB(F)
    • Try
      • R(B);CHECK,XP(b)
      • Vars
        • B(a);P_SPINB(a)::R1(A),XR(g)
      • Refutation
        • Q(c);CHECK,XR(B)
    • Try
      • Q(C);CHECK,XP(b)
      • Refutation
        • Q(c);CHECK,P_SPINQ(c),XQ(C)
    • Try
      • Q(C);CHECK,XQ(c)
      • Refutation
        • P(e);XQ(C)
  • Actual
    • S(D);XP(b)
    • Threat
      • R(B)+S(D),DCHECK
    • Vars
      • K(h);CHECK,P-FLIGHT,P_SPINR(g)::QAB1(C)
      • K(h);CHECK,P_SPINR(g),S_FLIGHT::S(D)
      • Q(c);CHECK,N_GUARD::QAB1(C),XQ(c)
      • Q(c);CHECK,N_GUARD,P_SPINQ(c),XS(D)::QAB1(C)
      • B(a);SBLOCK::QAB1(C)
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