MESON Chess Problem Database

Problem Display
PID: 248437 (1Br3q1/Q1rp2pn/5p1b/nbNPkN2/1R3pP1/1P4P1/2K1P3/4R2B w - - 0 1)

Peris Pardo, Julio

British Chess Magazine, 1932

1Br3q1/Q1rp2pn/5p1b/nbNPkN2/1R3pP1/1P4P1/2K1P3/4R2B

#2

13 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe2
      • 2.Rxe2#
    • 1...Bd3+
      • 2.exd3#
    • 1...Bc4
      • 2.Sxd7#
    • 1...Bc6
      • 2.Sd3#
    • 1...Sc4
      • 2.Sd3#
    • 1...Sc6
      • 2.Sxd7#
    • 1...Sb7
      • 2.Qa1#
    • 1...Sg5
      • 2.gxf4#
  • Tries
    • 1.Bxc7+?
      • 1...d6
        • 2.Bxd6#
      • 1...Rxc7!
    • 1.Rd1?
      • threat
        • 2.Re4#
      • 1...Qxd5
        • 2.Rxd5#
      • 1...Bc4
        • 2.Sxd7#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sg5
        • 2.gxf4#
      • 1...Bd3+!
    • 1.Qb7?
      • threat
        • 2.Re4#
      • 1...Bd3+
        • 2.exd3#
      • 1...Qxd5
        • 2.Qxd5#
      • 1...Bc4
        • 2.Sxd7#
      • 1...Bc6
        • 2.Sd3#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sc6
        • 2.Sxd7#
      • 1...Sg5
        • 2.gxf4#
      • 1...Sxb7!
    • 1.Qxc7+?
      • 1...d6
        • 2.Qxd6#
      • 1...Rxc7!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Re4#
      • 1...Bd3+
        • 2.exd3#
      • 1...Qxd5
        • 2.Qxd5#
      • 1...Bc4
        • 2.Sxd7#
      • 1...Bc6
        • 2.Sd3#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sc6
        • 2.Sxd7#
      • 1...Sb7
        • 2.Qa1#
      • 1...Sg5
        • 2.gxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(c);OGATE,P_SPINB(c),XP(D)::R(A),XB(c)
    • B(c);CHECK,OGATE::R(A)+P(D),XB(c)
    • B(c);N_PINS(I)::S(I),XP(h)
    • B(c);N_PINS(I)::S(I)
    • S(b);N_PINS(I)::S(I)
    • S(b);N_PINS(I)::S(I),XP(h)
    • S(b);OGATE::QAB(L)
    • S(j);S_CUTB(f)::P(F),XP(a)
  • Tries
    • Try
      • B(M);CHECK,N_SPINS(I),XR(g)
      • Vars
        • P(h);P_SPINP(h)::B(M),XP(h)
      • Refutation
        • R(k);P_PINS(I),XB(M)
    • Try
      • R(A);
      • Threat
        • R1(G)
      • Vars
        • Q(l);OGATE,XP(J)::R1(A),XQ(l)
        • B(c);N_PINS(I)::S(I),XP(h)
        • S(b);N_PINS(I)::S(I)
        • S(j);S_CUTB(f)::P(F),XP(a)
      • Refutation
        • B(c);CHECK
    • Try
      • Q(L);
      • Threat
        • R1(G)
      • Vars
        • B(c);CHECK,OGATE::R(A)+P(D),XB(c)
        • Q(l);OGATE,XP(J)::QAR1(L),XQ(l)
        • B(c);N_PINS(I)::S(I),XP(h)
        • B(c);N_PINS(I)::S(I)
        • S(b);N_PINS(I)::S(I)
        • S(b);N_PINS(I)::S(I),XP(h)
        • S(j);S_CUTB(f)::P(F),XP(a)
      • Refutation
        • S(b);XQ(L)
    • Try
      • Q(L);CHECK,N_SPINS(I),XR(g)
      • Vars
        • P(h);P_SPINP(h)::QAB1(L),XP(h)
      • Refutation
        • R(k);P_PINS(I),P_SPINR(k),XQ(L)
  • Actual
    • Q(L);
    • Threat
      • R1(G)
    • Vars
      • B(c);CHECK,OGATE::R(A)+P(D),XB(c)
      • Q(l);OGATE,XP(J)::QAR1(L),XQ(l)
      • B(c);N_PINS(I)::S(I),XP(h)
      • B(c);N_PINS(I)::S(I)
      • S(b);N_PINS(I)::S(I)
      • S(b);N_PINS(I)::S(I),XP(h)
      • S(b);OGATE::QAB(L)
      • S(j);S_CUTB(f)::P(F),XP(a)
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